…e_fix

* commit '565f7545c422192218b803874fbdf93e8d8f08ee': (27 commits)
  [Lens API] ESQL schema for XY separately for Agent and some small token optimizations (elastic#256885)
  Fix "Accessing resource attributes before async attributes settled" telemetry error (elastic#256880)
  [Security Solution][Attacks/Alerts][Attacks page][Table section] Preserver "Sort by" state on Attacks page (elastic#256717) (elastic#256795)
  [APM] Improve redirect with default date range guard (elastic#256887)
  [Security Solution][Attacks/Alerts][Attacks page][Table section] Add assignees avatars to the group component (elastic#250126) (elastic#256901)
  [Docs] add xpack.alerting.rules.maxScheduledPerMinute setting description (elastic#257041)
  [SO] Fix non-deterministic ordering in nested find API integration tests (elastic#256447)
  [Write-restricted dashboards] Update user profile retrieval for getShouldAddAccessControl (elastic#255065)
  [One Workflow] Add Scout API test scaffold and execution tests (elastic#256300)
  [Fleet] add use_apm if dynamic_signal_types are enabled (elastic#256429)
  [Fleet] ignore data streams starting with `.` in Fleet API (elastic#256625)
  [ES|QL] METRICS_INFO support: columns_after & summary (elastic#256758)
  [Agent Builder] Agent plugins: initial installation support (elastic#256478)
  [Streams] Add field descriptions and documentation-only field overrides (elastic#255136)
  [api-docs] 2026-03-11 Daily api_docs build (elastic#257023)
  [Security Solution] fix alerts page infinite loading state due to data view error (elastic#256983)
  [Logging] Add `service.*` global fields (elastic#256878)
  [Canvas] Apply embeddable transforms to embeddable elements (elastic#252191)
  [table_list_view_table] stabilize jest test (elastic#254991)
  [Obs AI] get_index_info: add unit tests (elastic#256802)
  ...

…elemetry error (#256880)

This has been developed with Cursor, please check carefully. 

## Summary

- Fixes a race condition in `initTelemetry` where `initTracing` and
`initMetrics` were called with a `Resource` whose async detectors (host,
OS, env, process) hadn't resolved yet, causing repeated
`[ERROR][telemetry] Accessing resource attributes before async
attributes settled` errors at startup
- Defers tracer/metrics provider initialization until
`resource.waitForAsyncAttributes()` resolves, while keeping
auto-instrumentations registered synchronously so HTTP context
propagation isn't missed

## Details

`resources.detectResources()` uses async detectors that return promises.
The resulting `Resource` has `asyncAttributesPending = true` until those
promises settle. The previous code passed this resource directly to
`initTracing()`, which meant:

1. `BaseInferenceSpanProcessor.onEnd` and
`PhoenixSpanProcessor.processInferenceSpan` accessed
`span.resource.attributes` while promises were still pending
2. OpenTelemetry's `Resource.attributes` getter logged the error and
**silently skipped unsettled attribute values**, producing spans with
incomplete resource data
3. This could cause exported spans to not appear correctly in
Phoenix/Langfuse

The fix awaits `resource.waitForAsyncAttributes()` before creating the
tracer provider and span processors. Auto-instrumentations
(`maybeInitAutoInstrumentations`) remain synchronous since they need to
monkey-patch HTTP modules before any requests are made and don't depend
on resource attributes. The deferral is safe because inference tracing
spans only occur well after Kibana startup (~seconds), while async
resource detection resolves in <100ms.

## Test plan

- [ ] Start Kibana with `telemetry.tracing.enabled: true` and a Phoenix
exporter configured
- [ ] Verify no `Accessing resource attributes before async attributes
settled` errors in logs
- [ ] Trigger an inference call (e.g. via Agent Builder) and verify the
trace appears in Phoenix
- [ ] Existing unit test (`init_telemetry.test.ts`) continues to pass —
it validates `resourceFromAttributes` is called with correct attributes,
which still happens synchronously

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Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>