[Forwardport] Snapshot _status API to return correct status for partial snapshots (update version)

[reta]

Description

Forwardport of #13260 to main

Related Issues

N/A

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Failing checks are inspected and point to the corresponding known issue(s) (See: Troubleshooting Failing Builds)
• Commits are signed per the DCO using --signoff
• Commit changes are listed out in CHANGELOG.md file (See: Changelog)
• Public documentation issue/PR created

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[github-actions]

❕ Gradle check result for e72cd3f: UNSTABLE

• TEST FAILURES:

      1 org.opensearch.cluster.MinimumClusterManagerNodesIT.testThreeNodesNoClusterManagerBlock

Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 71.56%. Comparing base (b15cb0c) to head (e72cd3f).
Report is 187 commits behind head on main.

Files	Patch %	Lines
...va/org/opensearch/cluster/SnapshotsInProgress.java	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #13262      +/-   ##
============================================
+ Coverage     71.42%   71.56%   +0.14%     
- Complexity    59978    60738     +760     
============================================
  Files          4985     5040      +55     
  Lines        282275   285456    +3181     
  Branches      40946    41338     +392     
============================================
+ Hits         201603   204280    +2677     
- Misses        63999    64346     +347     
- Partials      16673    16830     +157     

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[owaiskazi19]

@reta for my understanding, why didn't we make this change in the initial PR itself? Because the backport 2.x PR had V_2_14_0 version check? So we could have done this change in the main branch and backport the same to 2.x?

[reta]

@reta for my understanding, why didn't we make this change in the initial PR itself? Because the backport 2.x PR had V_2_14_0 version check? So we could have done this change in the main branch and backport the same to 2.x?

@owaiskazi19 In general, the mixed cluster tests fail (because 3.x makes an assumption that 2.x knows more than it does).

[owaiskazi19]

Thanks @reta for taking care of this.