Update to new request builder and processor contracts.

[malithie]

Proposed changes in this pull request

Related to wso2/product-is#23108

This PR utilizes the new ActionExecutionRequestBuilder and ResponseProcessor contracts for pre issue access token action implementation.

[jenkins-is-staging]

PR builder started
Link: https://github.com/wso2/product-is/actions/runs/13377896891

[codecov]

Codecov Report

Attention: Patch coverage is 8.33333% with 11 lines in your changes missing coverage. Please review.

Project coverage is 56.47%. Comparing base (ba31964) to head (ed111f7).
Report is 20 commits behind head on master.

Files with missing lines	Patch %	Lines
...xecution/PreIssueAccessTokenResponseProcessor.java	0.00%	6 Missing ⚠️
...dlers/grant/AbstractAuthorizationGrantHandler.java	0.00%	3 Missing ⚠️
...uth2/token/handlers/grant/RefreshGrantHandler.java	0.00%	2 Missing ⚠️

❌ Your patch status has failed because the patch coverage (8.33%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #2719      +/-   ##
============================================
- Coverage     56.47%   56.47%   -0.01%     
- Complexity     8548     8568      +20     
============================================
  Files           654      654              
  Lines         48679    48758      +79     
  Branches      10152    10229      +77     
============================================
+ Hits          27491    27534      +43     
- Misses        17274    17295      +21     
- Partials       3914     3929      +15     

Flag	Coverage Δ
unit	39.95% <8.33%> (+0.04%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[jenkins-is-staging]

PR builder completed
Link: https://github.com/wso2/product-is/actions/runs/13377896891
Status: success

[jenkins-is-staging]

Approving the pull request based on the successful pr build https://github.com/wso2/product-is/actions/runs/13377896891