Fix show only personal setting not updating the view immediately

[sunkup]

Purpose

Fix show only personal setting not updating the view.

Short description

• AccountSettings: Split pair of show only personal settings (grouped in a single data class before)
• Remove/Replace deprecated getShowOnlyPersonalPair method
• AccountScreen, AccountScreenModel and GetServiceCollectionPagerUseCase: Create and consume showOnlyPersonal settings separately
• use viewModelScope instead of CoroutineScope(Dispatchers.Default)
• GetServiceCollectionPagerUseCase: Fix showOnlyPersonal flow state change not triggering re-emission
  • Note: The problem was that we used flatMapConcat which waits for the inner flow to finish before emitting new values even if showOnlyPersonalFlow emitted new values. Now we are using flatMapLatest which will cancel the inner flow instead of waiting. Note also that using flattenMerge would also work, but probably creates unnecessary overhead as it continuously merges emits from both the inner and outer flow, which we don't need.

Checklist

• The PR has a proper title, description and label.
• I have self-reviewed the PR.
• I have added documentation to complex functions and functions that can be used by other modules.
• I have added reasonable tests or consciously decided to not add tests.

[rfc2822]

Looks good & works in what I have tested 👍🏻