[Backport 2.x] Fix a flaky test that relies on terminate_after for an exact count ma…

[opensearch-trigger-bot]

Backport 8fe15e6 from #12179.

[github-actions]

Compatibility status:

Checks if related components are compatible with change b80cc6a

Incompatible components

Skipped components

Compatible components

Compatible components: [https://github.com/opensearch-project/asynchronous-search.git, https://github.com/opensearch-project/anomaly-detection.git, https://github.com/opensearch-project/reporting.git, https://github.com/opensearch-project/cross-cluster-replication.git, https://github.com/opensearch-project/performance-analyzer-rca.git, https://github.com/opensearch-project/job-scheduler.git, https://github.com/opensearch-project/common-utils.git, https://github.com/opensearch-project/alerting.git, https://github.com/opensearch-project/security.git, https://github.com/opensearch-project/geospatial.git, https://github.com/opensearch-project/k-nn.git, https://github.com/opensearch-project/custom-codecs.git, https://github.com/opensearch-project/observability.git, https://github.com/opensearch-project/flow-framework.git, https://github.com/opensearch-project/index-management.git, https://github.com/opensearch-project/performance-analyzer.git, https://github.com/opensearch-project/neural-search.git, https://github.com/opensearch-project/ml-commons.git, https://github.com/opensearch-project/notifications.git, https://github.com/opensearch-project/security-analytics.git, https://github.com/opensearch-project/sql.git]

[github-actions]

❌ Gradle check result for b80cc6a: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[reta]

❌ Gradle check result for b80cc6a: FAILURE

#9191
#12344

[github-actions]

❕ Gradle check result for b80cc6a: UNSTABLE

• TEST FAILURES:

      1 org.opensearch.index.shard.RemoteIndexShardTests.testNoFailuresOnFileReads

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (cafc515) 71.23% compared to head (b80cc6a) 71.22%.
Report is 1 commits behind head on 2.x.

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x   #12343      +/-   ##
============================================
- Coverage     71.23%   71.22%   -0.02%     
- Complexity    59980    59984       +4     
============================================
  Files          4944     4944              
  Lines        282203   282203              
  Branches      41335    41335              
============================================
- Hits         201022   200993      -29     
+ Misses        64187    64170      -17     
- Partials      16994    17040      +46     

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