[Backport 2.x] Star tree codec changes

[bharath-techie]

Description

Backport of #14514

There are no conflicts, direct cherry pick of main branch commit.

Related Issues

Resolves #14387

Check List

• Functionality includes testing.
• API changes companion pull request created, if applicable.
• Public documentation issue/PR created, if applicable.

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[github-actions]

✅ Gradle check result for 55e18dc: SUCCESS

[codecov]

Codecov Report

Attention: Patch coverage is 87.91209% with 11 lines in your changes missing coverage. Please review.

Project coverage is 71.47%. Comparing base (fcd88aa) to head (bc5bd23).
Report is 1 commits behind head on 2.x.

Files	Patch %	Lines
...ec/composite/datacube/startree/StarTreeValues.java	0.00%	4 Missing ⚠️
...ex/codec/composite/Composite99DocValuesWriter.java	92.10%	0 Missing and 3 partials ⚠️
...ex/codec/composite/Composite99DocValuesFormat.java	80.00%	2 Missing ⚠️
...ex/codec/composite/Composite99DocValuesReader.java	85.71%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x   #15321      +/-   ##
============================================
- Coverage     71.54%   71.47%   -0.07%     
+ Complexity    63124    63065      -59     
============================================
  Files          5178     5184       +6     
  Lines        296088   296174      +86     
  Branches      43114    43121       +7     
============================================
- Hits         211828   211697     -131     
- Misses        66541    66702     +161     
- Partials      17719    17775      +56     

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[github-actions]

❕ Gradle check result for bc5bd23: UNSTABLE

• TEST FAILURES:

      1 org.opensearch.action.admin.cluster.node.tasks.ResourceAwareTasksTests.testTaskResourceTrackingDuringTaskCancellation

Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[bharath-techie]

Closing the PR as auto backport PR is merged