[Backport 2.x] Fix flaky test for CopyProcessorTests

[opensearch-trigger-bot]

Backport c529265 from #11982.

[github-actions]

❕ Gradle check result for 01daf4e: UNSTABLE

• TEST FAILURES:

      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
      1 org.opensearch.cluster.coordination.AwarenessAttributeDecommissionIT.testConcurrentDecommissionAction

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 (c40fcff) 71.12% compared to head (01daf4e) 71.12%.

Additional details and impacted files

@@            Coverage Diff            @@
##                2.x   #11994   +/-   ##
=========================================
  Coverage     71.12%   71.12%           
- Complexity    59361    59419   +58     
=========================================
  Files          4891     4891           
  Lines        279940   279940           
  Branches      41055    41055           
=========================================
+ Hits         199099   199109   +10     
- Misses        63957    63974   +17     
+ Partials      16884    16857   -27     

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[github-actions]

Compatibility status:

Checks if related components are compatible with change 01daf4e

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/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/observability.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/neural-search.git, https://github.com/opensearch-project/ml-commons.git, https://github.com/opensearch-project/geospatial.git, https://github.com/opensearch-project/index-management.git, https://github.com/opensearch-project/alerting.git, https://github.com/opensearch-project/security.git]