[Backport 2.x] Flatten response times

[opensearch-trigger-bot]

Backport 2df8acd from #2471

[DarshitChanpura]

CI failure would be fixed with #2451 merge. @scrawfor99 Would you mind merging this once CI passes?

[codecov-commenter]

Codecov Report

❌ Patch coverage is 81.81818% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 61.09%. Comparing base (eb8c59d) to head (e4b97ef).
⚠️ Report is 640 commits behind head on 2.x.

Files with missing lines	Patch %	Lines
...y/auth/internal/InternalAuthenticationBackend.java	81.81%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x    #2477      +/-   ##
============================================
- Coverage     61.09%   61.09%   -0.01%     
- Complexity     3254     3255       +1     
============================================
  Files           258      258              
  Lines         18130    18137       +7     
  Branches       3231     3232       +1     
============================================
+ Hits          11076    11080       +4     
- Misses         5483     5484       +1     
- Partials       1571     1573       +2     

Files with missing lines	Coverage Δ
...y/auth/internal/InternalAuthenticationBackend.java	71.42% <81.81%> (+1.78%)	⬆️

... and 1 file with indirect coverage changes

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