refactor: prepare Android ViewModel creation boundary [WPB-23495]

[Garzas]

https://wearezeta.atlassian.net/browse/WPB-23495

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  • answers the question: If merged, this PR will: ... ³

• The PR Description

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What's new in this PR?

Summary

Prepares the old login ViewModel creation boundary for the Metro migration.

This PR removes direct SavedStateHandle.navArgs() usage from the old login base/email/SSO ViewModels and passes LoginNavArgs explicitly through assisted ViewModel creation. It also moves saved login input persistence behind a small LoginSavedInputStore boundary so the ViewModels no longer own the Android saved-state mechanism directly.

Changes

• Add wireViewModel(...) helpers for assisted Hilt ViewModel creation from Compose.
• Change LoginViewModel, LoginEmailViewModel, and LoginSSOViewModel to receive explicit LoginNavArgs.
• Add LoginSavedInputStore and SavedStateLoginSavedInputStore.
• Update old login and new-login password call sites to create assisted LoginEmailViewModel / LoginSSOViewModel with nav args.
• Keep SSO Nomad behavior intact while moving auto-login args handling out of direct SavedStateHandle.navArgs() reads.

[sonarqubecloud]

Quality Gate passed

Issues
2 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

❌ Patch coverage is 82.00000% with 9 lines in your changes missing coverage. Please review.
✅ Project coverage is 51.88%. Comparing base (de8e06d) to head (ee0ac8a).

Files with missing lines	Patch %	Lines
...d/ui/authentication/login/sso/LoginSSOViewModel.kt	81.08%	4 Missing and 3 partials ⚠️
...entication/login/SavedStateLoginSavedInputStore.kt	85.71%	1 Missing ⚠️
.../authentication/login/email/LoginEmailViewModel.kt	83.33%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #4868      +/-   ##
===========================================
+ Coverage    51.86%   51.88%   +0.01%     
===========================================
  Files          612      613       +1     
  Lines        21270    21288      +18     
  Branches      3413     3414       +1     
===========================================
+ Hits         11032    11045      +13     
- Misses        9219     9222       +3     
- Partials      1019     1021       +2     

Files with missing lines	Coverage Δ
.../android/ui/authentication/login/LoginViewModel.kt	51.72% <ø> (-10.44%)	⬇️
...entication/login/SavedStateLoginSavedInputStore.kt	85.71% <85.71%> (ø)
.../authentication/login/email/LoginEmailViewModel.kt	78.68% <83.33%> (+0.11%)	⬆️
...d/ui/authentication/login/sso/LoginSSOViewModel.kt	72.48% <81.08%> (+0.55%)	⬆️

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