[Backport 2.x] Ensure that dual mode enabled flag from cluster settings can get propagated to core

[opensearch-trigger-bot]

Backport 811f26d from #4820.

[codecov]

Codecov Report

Attention: Patch coverage is 83.33333% with 1 line in your changes missing coverage. Please review.

Project coverage is 64.60%. Comparing base (5902191) to head (f4f50fc).
Report is 5 commits behind head on 2.x.

Files with missing lines	Patch %	Lines
...arch/security/ssl/OpenSearchSecuritySSLPlugin.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              2.x    #4830      +/-   ##
==========================================
- Coverage   64.66%   64.60%   -0.07%     
==========================================
  Files         320      320              
  Lines       22372    22384      +12     
  Branches     3611     3616       +5     
==========================================
- Hits        14467    14461       -6     
- Misses       6127     6140      +13     
- Partials     1778     1783       +5     

Files with missing lines	Coverage Δ
.../opensearch/security/OpenSearchSecurityPlugin.java	84.88% <100.00%> (+0.02%)	⬆️
.../security/ssl/OpenSearchSecureSettingsFactory.java	81.25% <100.00%> (+1.93%)	⬆️
...arch/security/ssl/OpenSearchSecuritySSLPlugin.java	86.30% <0.00%> (ø)

... and 5 files with indirect coverage changes