[Backport 2.x] separate doc-level monitor query indices created by detectors

[opensearch-trigger-bot]

Backport 1ca4090 from #1324.

[codecov]

Codecov Report

Attention: Patch coverage is 85.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 68.66%. Comparing base (2958d18) to head (18e3ef2).
Report is 3 commits behind head on 2.x.

Files with missing lines	Patch %	Lines
...lytics/transport/TransportIndexDetectorAction.java	81.25%	1 Missing and 2 partials ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x    #1330      +/-   ##
============================================
- Coverage     68.74%   68.66%   -0.08%     
- Complexity     3583     3586       +3     
============================================
  Files           404      404              
  Lines         20037    20046       +9     
  Branches       2042     2045       +3     
============================================
- Hits          13774    13765       -9     
- Misses         5242     5261      +19     
+ Partials       1021     1020       -1     

Flag	Coverage Δ
	68.66% <85.00%> (-0.08%)	⬇️

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[opensearch-trigger-bot]

The backport to 2.15 failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add .worktrees/backport-2.15 2.15
# Navigate to the new working tree
cd .worktrees/backport-2.15
# Create a new branch
git switch --create backport/backport-1330-to-2.15
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 038d60a56b25d81ad36c27bbf4a6bc3985569144
# Push it to GitHub
git push --set-upstream origin backport/backport-1330-to-2.15
# Go back to the original working tree
cd ../..
# Delete the working tree
git worktree remove .worktrees/backport-2.15

Then, create a pull request where the base branch is 2.15 and the compare/head branch is backport/backport-1330-to-2.15.