[Snapshot v2] Fix bug in snapshot update check for multiple v2 repo

[gbbafna]

Description

When we update a repository-v2 , it fails with

{"error":{"root_cause":[{"type":"repository_exception","reason":"[repo] setting shallow_snapshot_v2 cannot be enabled as this setting can be enabled only on one repository  and one or more repositories in the cluster have the setting as enabled"}],"type":"repository_exception","reason":"[repo] setting shallow_snapshot_v2 cannot be enabled as this setting can be enabled only on one repository  and one or more repositories in the cluster have the setting as enabled"},"status":500}%

This is because of bug in repositoryWithShallowV2Exists check which doesn't exclude itself while doing the check .

Now we are excluding the repository-v2 which is getting updated .

Related Issues

Resolves #[Issue number to be closed when this PR is merged]

Check List

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

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[github-actions]

❌ Gradle check result for 9fdc504: FAILURE

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[github-actions]

❌ Gradle check result for 9fdc504: 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 9fdc504: 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 9fdc504: SUCCESS

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.99%. Comparing base (0bded88) to head (9fdc504).
Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #16379      +/-   ##
============================================
- Coverage     72.07%   71.99%   -0.09%     
+ Complexity    64819    64803      -16     
============================================
  Files          5307     5307              
  Lines        302718   302722       +4     
  Branches      43734    43735       +1     
============================================
- Hits         218178   217938     -240     
- Misses        66638    66938     +300     
+ Partials      17902    17846      -56     

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