Migrate Sync Status Screen to Compose

[shobhitagarwal1612]

Towards #1795

Migrates SyncStatusFragment from the legacy XML layout to pure Jetpack Compose.

• Replace sync_status_frag.xml with SyncStatusScreen composable
• Convert SyncStatusViewModel from LiveData to StateFlow<SyncStatusState>
• Convert SyncStatusFragment to a thin ComposeView wrapper
• Remove unused sync_status_frag.xml and ic_arrow_back.xml
• Add unit and Compose tests for ViewModel, Screen, and Fragment

Before	After

@andreia-ferreira PTAL?

[codecov]

Codecov Report

❌ Patch coverage is 63.23529% with 25 lines in your changes missing coverage. Please review.
✅ Project coverage is 69.71%. Comparing base (8b167b3) to head (e2f0f2e).

Files with missing lines	Patch %	Lines
...platform/android/ui/syncstatus/SyncStatusScreen.kt	47.61%	20 Missing and 2 partials ⚠️
...oundplatform/android/ui/syncstatus/SyncListItem.kt	71.42%	1 Missing and 1 partial ⚠️
...atform/android/ui/syncstatus/SyncStatusFragment.kt	90.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master    #3923      +/-   ##
============================================
- Coverage     69.79%   69.71%   -0.08%     
+ Complexity     1987     1985       -2     
============================================
  Files           415      417       +2     
  Lines         11380    11426      +46     
  Branches       1486     1488       +2     
============================================
+ Hits           7943     7966      +23     
- Misses         2670     2691      +21     
- Partials        767      769       +2     

Files with missing lines	Coverage Δ
...platform/android/ui/syncstatus/SyncStatusDetail.kt	100.00% <100.00%> (ø)
...dplatform/android/ui/syncstatus/SyncStatusState.kt	100.00% <100.00%> (ø)
...tform/android/ui/syncstatus/SyncStatusViewModel.kt	80.00% <100.00%> (+1.95%)	⬆️
...atform/android/ui/syncstatus/SyncStatusFragment.kt	92.85% <90.00%> (-1.27%)	⬇️
...oundplatform/android/ui/syncstatus/SyncListItem.kt	63.49% <71.42%> (+0.58%)	⬆️
...platform/android/ui/syncstatus/SyncStatusScreen.kt	47.61% <47.61%> (ø)

... and 1 file with indirect coverage changes

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