Fix failing UTs and increment version to 3.3.0-SNAPSHOT

[nathaliellenaa]

Description

• Fix failing UTs due to this change Update user parsing to include custom attributes common-utils#827
  • Example failing UTs: https://github.com/opensearch-project/ml-commons/actions/runs/17168595792/job/48714049349?pr=4112
• Increment version to 3.3.0-SNAPSHOT

Related Issues

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

Check List

• New functionality includes testing.
• New functionality has been documented.
• API changes companion pull request created.
• Commits are signed per the DCO using --signoff.
• Public documentation issue/PR created.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.81%. Comparing base (1db44b4) to head (c1ecf22).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #4132   +/-   ##
=========================================
  Coverage     81.81%   81.81%           
  Complexity     8846     8846           
=========================================
  Files           761      761           
  Lines         38099    38099           
  Branches       4250     4250           
=========================================
+ Hits          31169    31170    +1     
  Misses         5109     5109           
+ Partials       1821     1820    -1     

Flag	Coverage Δ
ml-commons	81.81% <ø> (+<0.01%)	⬆️

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