feat: add GetSelfTeamIdUseCase to retrieve current user's team ID from cache [WPB-25803]

[MohamadJaara]

https://wearezeta.atlassian.net/browse/WPB-25803

Avoid fetching the full self user from DB when only the current team id is needed. The team id is already cached in memory through Kalium, so these paths can use GetSelfTeamIdUseCase directly.

What changed

• Added/provided GetSelfTeamIdUseCase through UserScope and Hilt.
• Switched conversation list/search and self profile team-id checks to the cached provider.
• Updated affected unit tests.

[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

[codecov]

Codecov Report

❌ Patch coverage is 62.50000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 51.26%. Comparing base (a61caa0) to head (cb983d0).
⚠️ Report is 4 commits behind head on develop.

Files with missing lines	Patch %	Lines
...ome/conversationslist/ConversationListViewModel.kt	33.33%	2 Missing ⚠️
...id/ui/userprofile/self/SelfUserProfileViewModel.kt	50.00%	0 Missing and 1 partial ⚠️

❌ Your patch check has failed because the patch coverage (62.50%) 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    #4847   +/-   ##
========================================
  Coverage    51.26%   51.26%           
========================================
  Files          611      611           
  Lines        21179    21181    +2     
  Branches      3407     3405    -2     
========================================
+ Hits         10857    10859    +2     
- Misses        9307     9308    +1     
+ Partials      1015     1014    -1     

Files with missing lines	Coverage Δ
...tions/usecase/GetConversationsFromSearchUseCase.kt	81.03% <100.00%> (+2.08%)	⬆️
...id/ui/userprofile/self/SelfUserProfileViewModel.kt	58.15% <50.00%> (ø)
...ome/conversationslist/ConversationListViewModel.kt	35.07% <33.33%> (-0.19%)	⬇️

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