[Backport 2.x] Interim build fix for PluginSubject related changes

[opensearch-trigger-bot]

Backport a1c0c7b from #4690.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 7 lines in your changes missing coverage. Please review.

Project coverage is 65.34%. Comparing base (6c431e1) to head (fc22c89).
Report is 7 commits behind head on 2.x.

Files with missing lines	Patch %	Lines
...pensearch/security/identity/NoopPluginSubject.java	0.00%	6 Missing ⚠️
.../opensearch/security/OpenSearchSecurityPlugin.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              2.x    #4694      +/-   ##
==========================================
- Coverage   65.40%   65.34%   -0.06%     
==========================================
  Files         316      317       +1     
  Lines       22151    22158       +7     
  Branches     3581     3581              
==========================================
- Hits        14487    14480       -7     
- Misses       5870     5882      +12     
- Partials     1794     1796       +2     

Files with missing lines	Coverage Δ
.../opensearch/security/OpenSearchSecurityPlugin.java	84.52% <0.00%> (-0.12%)	⬇️
...pensearch/security/identity/NoopPluginSubject.java	0.00% <0.00%> (ø)

... and 4 files with indirect coverage changes