fix(auth): use auth flow type correctly from amplifyconfiguration.json

[harsh62]

Issue #

#3927

Description

The issue fixes the parsing of USER_PASSWORD_AUTH flow correctly from the amplifyconfiguration.json.

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

Attention: Patch coverage is 80.00000% with 4 lines in your changes missing coverage. Please review.

Project coverage is 67.81%. Comparing base (ed263d7) to head (184f6ec).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
...ces/AWSCognitoAuthPlugin/Models/AuthFlowType.swift	71.42%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3928      +/-   ##
==========================================
+ Coverage   67.79%   67.81%   +0.02%     
==========================================
  Files        1124     1124              
  Lines       51984    52001      +17     
==========================================
+ Hits        35242    35267      +25     
+ Misses      16742    16734       -8     

Flag	Coverage Δ
API_plugin_unit_test	70.33% <ø> (ø)
AWSPluginsCore	70.36% <ø> (ø)
Amplify	47.90% <ø> (+0.01%)	⬆️
Analytics_plugin_unit_test	85.20% <ø> (ø)
Auth_plugin_unit_test	73.79% <80.00%> (+0.01%)	⬆️
DataStore_plugin_unit_test	83.53% <ø> (+0.09%)	⬆️
Geo_plugin_unit_test	74.86% <ø> (ø)
Logging_plugin_unit_test	63.11% <ø> (ø)
Predictions_plugin_unit_test	35.49% <ø> (ø)
PushNotifications_plugin_unit_test	88.43% <ø> (ø)
Storage_plugin_unit_test	76.88% <ø> (ø)
unit_tests	67.81% <80.00%> (+0.02%)	⬆️

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.