Improve authorization when accessing the organization resources from tenant perspective

[ShanChathusanda93]

Proposed changes in this pull request

• $subject
• Part of the fix for : Support for creating OAuth 2.0 clients inside B2B organizations for B2B API access wso2/product-is#21208
• When accessing the resources or an organization through tenant perspective, the accessing or authenticated user should have access in the sub organization level.
• To give the access in the sub organization level to the corresponding user, a shared user representation should be maintain in the sub organization level and correspoding permissions should assigned to that shared user representation.
• This implementation will check those conditions and allow the access.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 3.66%. Comparing base (ae652ff) to head (a411e26).
Report is 9 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff            @@
##             master    #299   +/-   ##
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  Coverage      3.66%   3.66%           
  Complexity       20      20           
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  Files            36      36           
  Lines          1529    1529           
  Branches        254     254           
========================================
  Hits             56      56           
  Misses         1472    1472           
  Partials          1       1           

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Approving the pull request based on the successful pr build https://github.com/wso2/product-is/actions/runs/12924601295