* TESTS: Fix Race Condition in Temp Path Creation

* Calling `createTempDir` concurrently here in
the `Follower`s causes collisions at times
which lead to `createEngine` throwing because
of unexpected files in the newly created temp
dir
   * Fixed by creating all temp dirs in the main test thread
* closes #33344

…e-default-distribution

* elastic/master: (213 commits)
  ML: Fix build after HLRC change
  Fix inner hits retrieval when stored fields are disabled (_none_) (elastic#33018)
  SQL: Show/desc commands now support table ids (elastic#33363)
  Mute testValidateFollowingIndexSettings
  HLRC: Add delete by query API (elastic#32782)
  [ML] The sort field on get records should default to the record_score (elastic#33358)
  [ML] Minor improvements to categorization Grok pattern creation (elastic#33353)
  [DOCS] fix a couple of typos (elastic#33356)
  Disable assemble task instead of removing it (elastic#33348)
  Simplify the return type of FieldMapper#parse. (elastic#32654)
  [ML] Delete forecast API (elastic#31134) (elastic#33218)
  Introduce private settings (elastic#33327)
  [Docs] Add search timeout caveats (elastic#33354)
  TESTS: Fix Race Condition in Temp Path Creation (elastic#33352)
  Fix from_range in search_after in changes snapshot (elastic#33335)
  TESTS+DISTR.: Fix testIndexCheckOnStartup Flake (elastic#33349)
  Null completion field should not throw IAE (elastic#33268)
  Adds code to help with IndicesRequestCacheIT failures (elastic#33313)
  Prevent NPE parsing the stop datafeed request. (elastic#33347)
  HLRC: Add ML get overall buckets API (elastic#33297)
  ...

There are two races in the testUpdateAndReadChangesConcurrently if the
following engines are created in the worker threads. We fixed the
translog issue in elastic#33352, but still another race with `createStore`.

This commit ensures that we create the following engines in the main
thread.

Relates elastic#33352
Closes elastic#33344

There are two races in the testUpdateAndReadChangesConcurrently if the
following engines are created in the worker threads. We fixed the
translog issue in #33352, but there is still another race with
createStore.

This commit ensures that we create all engines in the main thread.

Relates #33352
Closes #33344

There are two races in the testUpdateAndReadChangesConcurrently if the
following engines are created in the worker threads. We fixed the
translog issue in #33352, but there is still another race with
createStore.

This commit ensures that we create all engines in the main thread.

Relates #33352
Closes #33344