[Backport 2.x] Use async client for delete blob or path in S3 Blob Container

[opensearch-trigger-bot]

Backport 1d4b85f from #16788.

[github-actions]

❌ Gradle check result for 97c82f4: 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 97c82f4: 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 70.83333% with 7 lines in your changes missing coverage. Please review.

Project coverage is 71.80%. Comparing base (8a17b8a) to head (97c82f4).
Report is 2 commits behind head on 2.x.

Files with missing lines	Patch %	Lines
...rg/opensearch/repositories/s3/S3BlobContainer.java	45.45%	6 Missing ⚠️
...org/opensearch/repositories/s3/S3AsyncService.java	87.50%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x   #16984      +/-   ##
============================================
- Coverage     71.85%   71.80%   -0.05%     
- Complexity    65507    65510       +3     
============================================
  Files          5316     5316              
  Lines        305588   305500      -88     
  Branches      44516    44503      -13     
============================================
- Hits         219572   219366     -206     
- Misses        67674    67796     +122     
+ Partials      18342    18338       -4     

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