…lastic#175893)

## Summary

Fixes elastic#175191
https://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/4989
I replaced the unit tests with functional ones because of two reasons :
first, this is a complex behavior and it's tricky to test it with unit
tests with confidence. Secondly, it was actually tested but yet tests
were passing and the bug happened anyway.


### Checklist

Delete any items that are not applicable to this PR.

- [ ] Any text added follows [EUI's writing
guidelines](https://elastic.github.io/eui/#/guidelines/writing), uses
sentence case text and includes [i18n
support](https://github.com/elastic/kibana/blob/main/packages/kbn-i18n/README.md)
- [ ]
[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)
was added for features that require explanation or tutorials
- [ ] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios
- [ ] [Flaky Test
Runner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1) was
used on any tests changed
- [ ] Any UI touched in this PR is usable by keyboard only (learn more
about [keyboard accessibility](https://webaim.org/techniques/keyboard/))
- [ ] Any UI touched in this PR does not create any new axe failures
(run axe in browser:
[FF](https://addons.mozilla.org/en-US/firefox/addon/axe-devtools/),
[Chrome](https://chrome.google.com/webstore/detail/axe-web-accessibility-tes/lhdoppojpmngadmnindnejefpokejbdd?hl=en-US))
- [ ] If a plugin configuration key changed, check if it needs to be
allowlisted in the cloud and added to the [docker
list](https://github.com/elastic/kibana/blob/main/src/dev/build/tasks/os_packages/docker_generator/resources/base/bin/kibana-docker)
- [ ] This renders correctly on smaller devices using a responsive
layout. (You can test this [in your
browser](https://www.browserstack.com/guide/responsive-testing-on-local-server))
- [ ] This was checked for [cross-browser
compatibility](https://www.elastic.co/support/matrix#matrix_browsers)


### Risk Matrix

Delete this section if it is not applicable to this PR.

Before closing this PR, invite QA, stakeholders, and other developers to
identify risks that should be tested prior to the change/feature
release.

When forming the risk matrix, consider some of the following examples
and how they may potentially impact the change:

| Risk | Probability | Severity | Mitigation/Notes |

|---------------------------|-------------|----------|-------------------------|
| Multiple Spaces—unexpected behavior in non-default Kibana Space.
| Low | High | Integration tests will verify that all features are still
supported in non-default Kibana Space and when user switches between
spaces. |
| Multiple nodes—Elasticsearch polling might have race conditions
when multiple Kibana nodes are polling for the same tasks. | High | Low
| Tasks are idempotent, so executing them multiple times will not result
in logical error, but will degrade performance. To test for this case we
add plenty of unit tests around this logic and document manual testing
procedure. |
| Code should gracefully handle cases when feature X or plugin Y are
disabled. | Medium | High | Unit tests will verify that any feature flag
or plugin combination still results in our service operational. |
| [See more potential risk
examples](https://github.com/elastic/kibana/blob/main/RISK_MATRIX.mdx) |


### For maintainers

- [ ] This was checked for breaking API changes and was [labeled
appropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)

…lastic#175893)

## Summary

Fixes elastic#175191
https://buildkite.com/elastic/kibana-flaky-test-suite-runner/builds/4989
I replaced the unit tests with functional ones because of two reasons :
first, this is a complex behavior and it's tricky to test it with unit
tests with confidence. Secondly, it was actually tested but yet tests
were passing and the bug happened anyway.


### Checklist

Delete any items that are not applicable to this PR.

- [ ] Any text added follows [EUI's writing
guidelines](https://elastic.github.io/eui/#/guidelines/writing), uses
sentence case text and includes [i18n
support](https://github.com/elastic/kibana/blob/main/packages/kbn-i18n/README.md)
- [ ]
[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)
was added for features that require explanation or tutorials
- [ ] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios
- [ ] [Flaky Test
Runner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1) was
used on any tests changed
- [ ] Any UI touched in this PR is usable by keyboard only (learn more
about [keyboard accessibility](https://webaim.org/techniques/keyboard/))
- [ ] Any UI touched in this PR does not create any new axe failures
(run axe in browser:
[FF](https://addons.mozilla.org/en-US/firefox/addon/axe-devtools/),
[Chrome](https://chrome.google.com/webstore/detail/axe-web-accessibility-tes/lhdoppojpmngadmnindnejefpokejbdd?hl=en-US))
- [ ] If a plugin configuration key changed, check if it needs to be
allowlisted in the cloud and added to the [docker
list](https://github.com/elastic/kibana/blob/main/src/dev/build/tasks/os_packages/docker_generator/resources/base/bin/kibana-docker)
- [ ] This renders correctly on smaller devices using a responsive
layout. (You can test this [in your
browser](https://www.browserstack.com/guide/responsive-testing-on-local-server))
- [ ] This was checked for [cross-browser
compatibility](https://www.elastic.co/support/matrix#matrix_browsers)


### Risk Matrix

Delete this section if it is not applicable to this PR.

Before closing this PR, invite QA, stakeholders, and other developers to
identify risks that should be tested prior to the change/feature
release.

When forming the risk matrix, consider some of the following examples
and how they may potentially impact the change:

| Risk | Probability | Severity | Mitigation/Notes |

|---------------------------|-------------|----------|-------------------------|
| Multiple Spaces—unexpected behavior in non-default Kibana Space.
| Low | High | Integration tests will verify that all features are still
supported in non-default Kibana Space and when user switches between
spaces. |
| Multiple nodes—Elasticsearch polling might have race conditions
when multiple Kibana nodes are polling for the same tasks. | High | Low
| Tasks are idempotent, so executing them multiple times will not result
in logical error, but will degrade performance. To test for this case we
add plenty of unit tests around this logic and document manual testing
procedure. |
| Code should gracefully handle cases when feature X or plugin Y are
disabled. | Medium | High | Unit tests will verify that any feature flag
or plugin combination still results in our service operational. |
| [See more potential risk
examples](https://github.com/elastic/kibana/blob/main/RISK_MATRIX.mdx) |


### For maintainers

- [ ] This was checked for breaking API changes and was [labeled
appropriately](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)

Contributes to: elastic#194817

Why I assigned them:

Assigned advanced_settings due to elastic#175255

Assigned dashboard_controls due to elastic#190797

Assigned dashboard_links due to elastic#174772

Assigned dashboard_panel_options due to elastic#178596

Assigned grok_debugger due to https://github.com/elastic/kibana/blob/main/x-pack/plugins/grokdebugger/kibana.jsonc#L4

Assigned helpers due to elastic#164341 (call site)

Assigned home due to elastic#103192

Assigned index_lifecycle_management due to elastic#116207

Assigned ingest_node_pipelines due to elastic#113783

Assigned kibana_overview due to  https://github.com/elastic/kibana/blob/f00ac7a8a21463e6bb4a2784c3a3884f36c62900/x-pack/plugins/grokdebugger/kibana.jsonc#L4

Assigned management due to elastic#165705

Assigned painless_lab due to https://github.com/elastic/kibana/blob/main/x-pack/plugins/painless_lab/kibana.jsonc#L4

Assigned search_profiler due to elastic#195343

Assigned uptime due to https://github.com/elastic/kibana/blob/main/x-pack/plugins/observability_solution/uptime/kibana.jsonc#L4

Assigned lens due to elastic#175893

Assigned ml_anomaly_detection due to elastic#162126

Assigned canvas due to elastic#164376

Assigned cc replication due to elastic#149069

Assigned enterpise search due to elastic#79359

Assigned graph to due elastic#190797

Assigned license_management due to https://github.com/elastic/kibana/blob/main/x-pack/plugins/license_management/kibana.jsonc#L4

Assigned maps due to elastic#155161

Assigned observability due to https://github.com/elastic/kibana/blob/main/x-pack/plugins/observability_solution/observability/kibana.jsonc#L4

Assigned remote clusters due to elastic#96989

Assigned reporting due to elastic#121435

Assigned rollup_jobs due to https://github.com/elastic/kibana/blob/d57bc9a5d7d64f86b550eff7997605a3090aee9a/x-pack/plugins/rollup/kibana.jsonc#L4

Assigned watcher due to elastic#119717

## Summary

Assign files within `x-pack/test/accessibility/apps/group[1|2|3]`

### Why I assigned them:

Assigned advanced_settings due to
#175255

Assigned dashboard_controls due to
#190797

Assigned dashboard_links due to
#174772

Assigned dashboard_panel_options due to
#178596

Assigned grok_debugger due to
https://github.com/elastic/kibana/blob/main/x-pack/plugins/grokdebugger/kibana.jsonc#L4

Assigned helpers due to #164341
(call site)

Assigned home due to #103192

Assigned index_lifecycle_management due to
#116207

Assigned ingest_node_pipelines due to
#113783

Assigned kibana_overview due to
https://github.com/elastic/kibana/blob/f00ac7a8a21463e6bb4a2784c3a3884f36c62900/x-pack/plugins/grokdebugger/kibana.jsonc#L4

Assigned management due to #165705

Assigned painless_lab due to
https://github.com/elastic/kibana/blob/main/x-pack/plugins/painless_lab/kibana.jsonc#L4

Assigned search_profiler due to
#195343

Assigned uptime due to
https://github.com/elastic/kibana/blob/main/x-pack/plugins/observability_solution/uptime/kibana.jsonc#L4

Assigned lens due to #175893

Assigned ml_anomaly_detection due to
#162126

Assigned canvas due to #164376

Assigned cc replication due to
#149069

Assigned enterpise search due to
#79359

Assigned graph to due #190797

Assigned license_management due to
https://github.com/elastic/kibana/blob/main/x-pack/plugins/license_management/kibana.jsonc#L4

Assigned maps due to #155161

Assigned observability due to
https://github.com/elastic/kibana/blob/main/x-pack/plugins/observability_solution/observability/kibana.jsonc#L4

Assigned remote clusters due to
#96989

Assigned reporting due to #121435

Assigned rollup_jobs due to
https://github.com/elastic/kibana/blob/d57bc9a5d7d64f86b550eff7997605a3090aee9a/x-pack/plugins/rollup/kibana.jsonc#L4

Assigned watcher due to #119717


Contributes to: #194817

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>
Co-authored-by: Elastic Machine <elasticmachine@users.noreply.github.com>
Co-authored-by: Rodney Norris <rodney@tattdcodemonkey.com>