[Backport 2.9] Fix search pipeline bwc test

[opensearch-trigger-bot]

Backport 40c8a92 from #8764.

[noCharger]

Pending the gradle check pass

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.remotestore.SegmentReplicationUsingRemoteStoreIT.testDropPrimaryDuringReplication

• URL: https://build.ci.opensearch.org/job/gradle-check/20461/
• CommitID: ff673a9
  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

Merging #8765 (ff673a9) into 2.9 (cb6d891) will decrease coverage by 0.13%.
The diff coverage is 40.00%.

@@             Coverage Diff              @@
##                2.9    #8765      +/-   ##
============================================
- Coverage     70.69%   70.56%   -0.13%     
+ Complexity    57185    57092      -93     
============================================
  Files          4746     4746              
  Lines        270734   270722      -12     
  Branches      39955    39952       -3     
============================================
- Hits         191386   191039     -347     
- Misses        62896    63230     +334     
- Partials      16452    16453       +1     

Impacted Files	Coverage Δ
...pensearch/common/settings/FeatureFlagSettings.java	50.00% <ø> (ø)
.../java/org/opensearch/common/util/FeatureFlags.java	91.66% <ø> (-0.65%)	⬇️
server/src/main/java/org/opensearch/node/Node.java	86.02% <ø> (-0.02%)	⬇️
...opensearch/search/builder/SearchSourceBuilder.java	69.23% <0.00%> (-2.52%)	⬇️
...nsearch/search/pipeline/SearchPipelineService.java	85.58% <0.00%> (+0.58%)	⬆️
.../main/java/org/opensearch/action/ActionModule.java	96.01% <100.00%> (-0.01%)	⬇️
.../main/java/org/opensearch/index/IndexSettings.java	86.36% <100.00%> (-0.11%)	⬇️

... and 462 files with indirect coverage changes