Mute testNestedSort for concurrent segment search case

[sohami]

Description

Muting the flaky test as reported here #11258 to avoid noise.

Related Issues

N/A

Check List

New functionality includes testing.
All tests pass
New functionality has been documented.
New functionality has javadoc added
Failing checks are inspected and point to the corresponding known issue(s) (See: Troubleshooting Failing Builds)

• Commits are signed per the DCO using --signoff
  Commit changes are listed out in CHANGELOG.md file (See: Changelog)
  Public documentation issue/PR created

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[github-actions]

Compatibility status:

Checks if related components are compatible with change a84eb27

Incompatible components

Incompatible components: [https://github.com/opensearch-project/performance-analyzer.git]

Skipped components

Compatible components

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

[github-actions]

✅ Gradle check result for a84eb27: SUCCESS

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (7f4537c) 71.41% compared to head (a84eb27) 71.36%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #11298      +/-   ##
============================================
- Coverage     71.41%   71.36%   -0.05%     
+ Complexity    59022    58944      -78     
============================================
  Files          4890     4890              
  Lines        277421   277421              
  Branches      40308    40308              
============================================
- Hits         198112   197974     -138     
- Misses        62833    62977     +144     
+ Partials      16476    16470       -6     

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