Timeline better jump to behaviours

[ganfra]

Content

Improve behaviours of permalink navigation it includes :

• TypingNotification is now part of the timelineItems so indexes are correct
• Synchronisation around timeline indexer
• Center focused item on the view port if possible
• Fix jump to bottom when timeline is not live

Motivation and context

Replaces #3556
Fixes #2775

Screenshots / GIFs

Tests

• Step 1
• Step 2
• Step ...

Tested devices

• Physical
• Emulator
• OS version(s):

Checklist

• Changes have been tested on an Android device or Android emulator with API 23
• UI change has been tested on both light and dark themes
• Accessibility has been taken into account. See https://github.com/element-hq/element-x-android/blob/develop/CONTRIBUTING.md#accessibility
• Pull request is based on the develop branch
• Pull request title will be used in the release note, it clearly define what will change for the user
• Pull request includes screenshots or videos if containing UI changes
• Pull request includes a sign off
• You've made a self review of your PR

[github-actions]

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[sonarcloud]

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 SonarCloud

[codecov]

Codecov Report

Attention: Patch coverage is 68.65672% with 21 lines in your changes missing coverage. Please review.

Project coverage is 81.34%. Comparing base (f8fa218) to head (adc03c9).
Report is 7 commits behind head on develop.

Files with missing lines	Patch %	Lines
...roid/libraries/designsystem/utils/LazyListState.kt	43.75%	5 Missing and 4 partials ⚠️
...id/features/messages/impl/timeline/TimelineView.kt	55.55%	2 Missing and 2 partials ⚠️
...impl/timeline/components/TimelineItemVirtualRow.kt	0.00%	3 Missing ⚠️
...atures/messages/impl/timeline/TimelinePresenter.kt	91.66%	1 Missing ⚠️
...d/features/messages/impl/timeline/TimelineState.kt	80.00%	0 Missing and 1 partial ⚠️
...ne/factories/virtual/TimelineItemVirtualFactory.kt	0.00%	1 Missing ⚠️
...del/virtual/TimelineItemTypingNotificationModel.kt	0.00%	1 Missing ⚠️
...x/api/timeline/item/virtual/VirtualTimelineItem.kt	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3597      +/-   ##
===========================================
- Coverage    81.71%   81.34%   -0.38%     
===========================================
  Files         1751     1757       +6     
  Lines        41936    42448     +512     
  Branches      5071     5077       +6     
===========================================
+ Hits         34269    34528     +259     
- Misses        5893     6140     +247     
- Partials      1774     1780       +6     

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[jmartinesp]

Thanks, the changes LGTM and it works quite well.