fix(auth): return configuration error upon invalid redirect URI in hosted ui

[harsh62]

Issue #

#3888

Description

Fixing HostedUI action to throw correct error for invalid configuration

General Checklist

• Added new tests to cover change, if needed
• Build succeeds with all target using Swift Package Manager
• All unit tests pass
• All integration tests pass
• Security oriented best practices and standards are followed (e.g. using input sanitization, principle of least privilege, etc)
• Documentation update for the change if required
• PR title conforms to conventional commit style
• New or updated tests include Given When Then inline code documentation and are named accordingly testThing_condition_expectation()
• If breaking change, documentation/changelog update with migration instructions

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.02%. Comparing base (b7fa5db) to head (f6eeeb1).
Report is 3 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3889      +/-   ##
==========================================
- Coverage   68.20%   68.02%   -0.18%     
==========================================
  Files        1087     1087              
  Lines       38124    38123       -1     
==========================================
- Hits        26003    25934      -69     
- Misses      12121    12189      +68     

Flag	Coverage Δ
API_plugin_unit_test	69.35% <ø> (ø)
AWSPluginsCore	68.50% <ø> (ø)
Amplify	46.91% <ø> (ø)
Analytics_plugin_unit_test	84.52% <ø> (ø)
Auth_plugin_unit_test	79.34% <100.00%> (-0.02%)	⬇️
DataStore_plugin_unit_test	81.41% <ø> (-0.99%)	⬇️
Geo_plugin_unit_test	72.06% <ø> (ø)
Logging_plugin_unit_test	62.99% <ø> (ø)
Predictions_plugin_unit_test	35.87% <ø> (ø)
PushNotifications_plugin_unit_test	86.21% <ø> (ø)
Storage_plugin_unit_test	75.46% <ø> (ø)
unit_tests	68.02% <100.00%> (-0.18%)	⬇️

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