Implementing the user attribute handling for implicit flow

[indeewari]

Proposed changes in this pull request

Implementing the user attribute handling for implicit flow

When should this PR be merged

Once PR builder was successful

[jenkins-is-staging]

PR builder started
Link: https://github.com/wso2/product-is/actions/runs/12156915683

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PR builder completed
Link: https://github.com/wso2/product-is/actions/runs/12156915683
Status: failure

[jenkins-is-staging]

PR builder started
Link: https://github.com/wso2/product-is/actions/runs/12157887134

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 12 lines in your changes missing coverage. Please review.

Project coverage is 56.44%. Comparing base (2f91b22) to head (8f4ba1d).
Report is 3 commits behind head on master.

Files with missing lines	Patch %	Lines
...openidconnect/JWTAccessTokenOIDCClaimsHandler.java	0.00%	12 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #2641      +/-   ##
============================================
- Coverage     56.45%   56.44%   -0.01%     
- Complexity     8181     8184       +3     
============================================
  Files           632      632              
  Lines         46323    46342      +19     
  Branches       8245     8248       +3     
============================================
+ Hits          26150    26158       +8     
- Misses        16457    16465       +8     
- Partials       3716     3719       +3     

Flag	Coverage Δ
unit	38.67% <0.00%> (-0.02%)	⬇️

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[jenkins-is-staging]

PR builder completed
Link: https://github.com/wso2/product-is/actions/runs/12157887134
Status: failure

[jenkins-is-staging]

PR builder started
Link: https://github.com/wso2/product-is/actions/runs/12164016068

[jenkins-is-staging]

PR builder completed
Link: https://github.com/wso2/product-is/actions/runs/12164016068
Status: success

[jenkins-is-staging]

Approving the pull request based on the successful pr build https://github.com/wso2/product-is/actions/runs/12164016068