Add successfulSearchShardIndices in searchRequestContext

[dzane17]

Description

Add successfulSearchShardIndices in searchRequestContext

This list of indices will be used in the Query-Insights plugin for query shape generation.

Related Issues

Related RFC: opensearch-project/query-insights#69

Check List

• Functionality includes testing.
• API changes companion pull request created, if applicable.
• Public documentation issue/PR created, if applicable.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[github-actions]

✅ Gradle check result for 98adaf3: SUCCESS

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 71.93%. Comparing base (1bc81d3) to head (795e507).
Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
...opensearch/action/search/SearchRequestContext.java	66.66%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #15967      +/-   ##
============================================
- Coverage     71.96%   71.93%   -0.04%     
+ Complexity    64391    64347      -44     
============================================
  Files          5280     5280              
  Lines        300866   300871       +5     
  Branches      43474    43474              
============================================
- Hits         216510   216420      -90     
- Misses        66639    66711      +72     
- Partials      17717    17740      +23     

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[github-actions]

❌ Gradle check result for 2c5ceae: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

❌ Gradle check result for 0888e7b: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

❌ Gradle check result for 637d339: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[github-actions]

✅ Gradle check result for 795e507: SUCCESS

[opensearch-trigger-bot]

The backport to 2.x failed:

The process '/usr/bin/git' failed with exit code 128

To backport manually, run these commands in your terminal:

# Navigate to the root of your repository
cd $(git rev-parse --show-toplevel)
# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add ../.worktrees/OpenSearch/backport-2.x 2.x
# Navigate to the new working tree
pushd ../.worktrees/OpenSearch/backport-2.x
# Create a new branch
git switch --create backport/backport-15967-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 b3696116965ab45b675731af04e6defc34602f83
# Push it to GitHub
git push --set-upstream origin backport/backport-15967-to-2.x
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/OpenSearch/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-15967-to-2.x.