Set parent user's user store domain in shared token revoke flow

[HasiniSama]

Proposed changes in this pull request

Purpose

When revoking an access token in a shared user flow, the authorized user's User Store Domain is set to the shared user's domain. Therefore, when retrieving the clientIDs from here, it will only retrieve the clientIDs associated with the shared user's User Store Domain.

However, when creating access tokens for shared users the User Store Domain of the parent user is used here and here. Hence these tokens are not getting revoked.

Approach

Hence the access token revoke logic for shared user flow has to be improved to handle the user's domain correctly which will eventually detect all the clientIDs issued.

This is an alternative approach to the fix wso2-extensions/identity-oauth2-grant-organization-switch#38. In which we amend the user store domain when the token is issued. Which would lead to user store mismatch between the token and the actual user. Here, we change the logic in the token revoke method.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 18 lines in your changes missing coverage. Please review.

Project coverage is 56.32%. Comparing base (4a0382c) to head (c0fda82).
Report is 8 commits behind head on master.

Files with missing lines	Patch %	Lines
...java/org/wso2/carbon/identity/oauth/OAuthUtil.java	0.00%	18 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #2664      +/-   ##
============================================
+ Coverage     55.52%   56.32%   +0.80%     
- Complexity     8249     8285      +36     
============================================
  Files           632      632              
  Lines         48572    47001    -1571     
  Branches       8933     8783     -150     
============================================
- Hits          26970    26475     -495     
+ Misses        17732    16741     -991     
+ Partials       3870     3785      -85     

Flag	Coverage Δ
unit	38.93% <0.00%> (-0.03%)	⬇️

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