feat: support for new adminless groups feature events (WPB-25284)

[sbakhtiarov]

https://wearezeta.atlassian.net/browse/WPB-25284

https://wearezeta.atlassian.net/browse/WPB-25284

What's new in this PR?

Showing new AdminlessDeleteReminder system message for "Prevent Adminless groups" feature.
Message will be sent periodically by BE notifying users that this conversation will be removed.

[codecov]

Codecov Report

❌ Patch coverage is 35.71429% with 9 lines in your changes missing coverage. Please review.
✅ Project coverage is 49.86%. Comparing base (e6f3f16) to head (9d0be97).

Files with missing lines	Patch %	Lines
...kotlin/com/wire/android/util/DateAndTimeParsers.kt	0.00%	8 Missing ⚠️
...e/android/ui/home/conversations/model/UIMessage.kt	50.00%	1 Missing ⚠️

❌ Your patch check has failed because the patch coverage (35.71%) 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    #5118      +/-   ##
===========================================
- Coverage    49.87%   49.86%   -0.01%     
===========================================
  Files          666      666              
  Lines        24291    24304      +13     
  Branches      3765     3768       +3     
===========================================
+ Hits         12114    12119       +5     
- Misses       11059    11061       +2     
- Partials      1118     1124       +6     

Files with missing lines	Coverage Δ
.../wire/android/mapper/SystemMessageContentMapper.kt	48.21% <100.00%> (+1.22%)	⬆️
...e/conversations/messages/item/SystemMessageItem.kt	0.00% <ø> (ø)
...c/main/kotlin/com/wire/android/util/SupportPage.kt	100.00% <100.00%> (ø)
...e/android/ui/home/conversations/model/UIMessage.kt	40.89% <50.00%> (+0.05%)	⬆️
...kotlin/com/wire/android/util/DateAndTimeParsers.kt	63.63% <0.00%> (-8.78%)	⬇️

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[github-actions]

Test Results

2 154 tests   2 154 ✅  2m 1s ⏱️
  234 suites      0 💤
  234 files        0 ❌

Results for commit 9d0be97.

[github-actions]

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