[Backport 2.x] Allow empty translog for ITs testing no ingestion post refresh/commit

[opensearch-trigger-bot]

Backport e265355 from #11946.

[github-actions]

Compatibility status:

Checks if related components are compatible with change 6e92edd

Incompatible components

Incompatible components: [https://github.com/opensearch-project/asynchronous-search.git, https://github.com/opensearch-project/performance-analyzer.git, https://github.com/opensearch-project/reporting.git, https://github.com/opensearch-project/observability.git, https://github.com/opensearch-project/performance-analyzer-rca.git, https://github.com/opensearch-project/custom-codecs.git, https://github.com/opensearch-project/anomaly-detection.git, https://github.com/opensearch-project/sql.git, https://github.com/opensearch-project/cross-cluster-replication.git]

Skipped components

Compatible components

Compatible components: [https://github.com/opensearch-project/security-analytics.git, https://github.com/opensearch-project/job-scheduler.git, https://github.com/opensearch-project/k-nn.git, https://github.com/opensearch-project/common-utils.git, https://github.com/opensearch-project/notifications.git, https://github.com/opensearch-project/ml-commons.git, https://github.com/opensearch-project/neural-search.git, https://github.com/opensearch-project/security.git, https://github.com/opensearch-project/geospatial.git, https://github.com/opensearch-project/index-management.git, https://github.com/opensearch-project/alerting.git]

[github-actions]

❕ Gradle check result for 6e92edd: UNSTABLE

• TEST FAILURES:

      1 org.opensearch.search.SearchWeightedRoutingIT.testShardRoutingWithNetworkDisruption_FailOpenEnabled
      1 org.opensearch.index.shard.RemoteStoreRefreshListenerTests.testRefreshAfterCommit
      1 org.opensearch.index.shard.RemoteStoreRefreshListenerTests.testAfterRefresh
      1 org.opensearch.index.shard.RemoteStoreRefreshListenerTests.testAfterMultipleCommits
      1 org.opensearch.index.shard.RemoteStoreRefreshListenerTests.testAfterCommit

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 (f54ae8b) 71.13% compared to head (6e92edd) 71.10%.
Report is 2 commits behind head on 2.x.

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x   #11949      +/-   ##
============================================
- Coverage     71.13%   71.10%   -0.04%     
+ Complexity    59384    59381       -3     
============================================
  Files          4891     4891              
  Lines        279915   279915              
  Branches      41050    41050              
============================================
- Hits         199119   199025      -94     
- Misses        63951    64051     +100     
+ Partials      16845    16839       -6     

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