[Backport 2.x] Add support for async deletion in S3BlobContainer (#15621)

[ashking94]

Backport 2b670cc from #15621.

[github-actions]

❌ Gradle check result for b810ec8: 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 b810ec8: 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 b810ec8: UNSTABLE

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 82.96296% with 23 lines in your changes missing coverage. Please review.

Project coverage is 71.58%. Comparing base (448ae5e) to head (b810ec8).
Report is 7 commits behind head on 2.x.

Files with missing lines	Patch %	Lines
...ch/repositories/blobstore/BlobStoreRepository.java	42.85%	14 Missing and 2 partials ⚠️
...bstore/AsyncMultiStreamEncryptedBlobContainer.java	0.00%	4 Missing ⚠️
...rg/opensearch/repositories/s3/S3BlobContainer.java	97.01%	1 Missing and 1 partial ⚠️
...rch/repositories/s3/async/S3AsyncDeleteHelper.java	97.14%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x   #16013      +/-   ##
============================================
- Coverage     71.77%   71.58%   -0.20%     
+ Complexity    64687    64629      -58     
============================================
  Files          5277     5278       +1     
  Lines        302344   302476     +132     
  Branches      43993    44002       +9     
============================================
- Hits         217003   216521     -482     
- Misses        67223    67840     +617     
+ Partials      18118    18115       -3     

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