feat(Unsupported Directory fix): E2e tests for unsupported Paths

[Tulsishah]

Description

1. Adding e2e tests for unsupported paths scenario for different operations like list, copy, rename and delete.
2. Setting includeFolderAsPrefix flag as while making a list call, the includeFolderAsPrefix parameter must be set to true. This is because the HNS/Rapid bucket only displays folders as part of the CollapsedRuns output when this flag is enabled.

Link to the issue in case of a bug fix.

b/455706503

Testing details

1. Manual - NA
2. Unit tests - NA
3. Integration tests - Automated

Any backward incompatible change? If so, please explain.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 83.09%. Comparing base (0f5c69c) to head (f625619).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3978      +/-   ##
==========================================
- Coverage   83.13%   83.09%   -0.04%     
==========================================
  Files         148      148              
  Lines       18188    18188              
==========================================
- Hits        15120    15113       -7     
- Misses       2518     2523       +5     
- Partials      550      552       +2     

Flag	Coverage Δ
unittests	83.09% <100.00%> (-0.04%)	⬇️

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[Tulsishah]

/gemini review

[gemini-code-assist]

Code Review

This pull request introduces end-to-end tests for handling unsupported paths in GCS, covering list, copy, rename, and delete operations. It also includes a necessary fix in deletePrefixRecursively to correctly handle HNS buckets by setting the includeFolderAsPrefixes flag. The new tests are well-structured and provide good coverage for the intended scenarios. My review includes one suggestion to improve the readability and maintainability of the test setup configuration.