fix: crash when client removed (cherrypick from rc) (#WPB-18706)

[sbakhtiarov]

WPB-18706 [Android] Crash when account was deleted or device was removed

This PR was manually cherry-picked based on the following PR:

• fix: crash on logout [WPB-18706] #4147

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What's new in this PR?

Issues

Application crash when current client is deleted from other device.

Causes (Optional)

1. Current client removal triggers logout and clears data.
2. Data clear resets the "initialSyncCompleted" flag and HomeViewModel navigates to InitialSyncScreen.
3. This screen is not supposed to be called with no session and crashes on dependencies setup.

Solutions

Check current session availability in HomeViewModel before navigating to InitialSyncScreen.

[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 47.70%. Comparing base (69fc6c9) to head (6c3cffe).

Files with missing lines	Patch %	Lines
...n/kotlin/com/wire/android/ui/home/HomeViewModel.kt	50.00%	0 Missing and 2 partials ⚠️

❌ Your patch check has failed because the patch coverage (50.00%) is below the target coverage (80.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #4193   +/-   ##
========================================
  Coverage    47.70%   47.70%           
========================================
  Files          509      509           
  Lines        17418    17422    +4     
  Branches      2860     2862    +2     
========================================
+ Hits          8309     8311    +2     
  Misses        8251     8251           
- Partials       858      860    +2     

Files with missing lines	Coverage Δ
...n/kotlin/com/wire/android/ui/home/HomeViewModel.kt	83.33% <50.00%> (-3.04%)	⬇️

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[sonarqubecloud]

Quality Gate passed

Issues
0 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