Add PortalURLResolver

[ThaminduR]

Purpose

Add PortalURLResolver to populate the customized portal URL in the context for each flow. Currently flow type is hardcoded in the listener itself.

Issue

wso2/product-is#24285

[codecov]

Codecov Report

Attention: Patch coverage is 66.00000% with 17 lines in your changes missing coverage. Please review.

Project coverage is 71.62%. Comparing base (4f1e4c2) to head (7964d39).
Report is 10 commits behind head on main.

Files with missing lines	Patch %	Lines
...ce/management/core/listener/PortalURLResolver.java	70.21%	9 Missing and 5 partials ⚠️
...e/internal/BrandingPreferenceManagerComponent.java	0.00%	3 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##               main      #55       +/-   ##
=============================================
+ Coverage     60.88%   71.62%   +10.74%     
- Complexity      210      373      +163     
=============================================
  Files            28       40       +12     
  Lines          1158     1621      +463     
  Branches        162      232       +70     
=============================================
+ Hits            705     1161      +456     
+ Misses          364      356        -8     
- Partials         89      104       +15     

Flag	Coverage Δ
unit	60.83% <66.00%> (+16.01%)	⬆️

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