timeline : remove animateItem

[ganfra]

Content

Remove the animate item modifier on timeline.

Motivation and context

Animation is weird most of the time.

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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[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 SonarCloud

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.68%. Comparing base (c5f5ff3) to head (5a8cfda).
Report is 16 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3548      +/-   ##
===========================================
- Coverage    82.68%   82.68%   -0.01%     
===========================================
  Files         1732     1732              
  Lines        40983    40982       -1     
  Branches      4966     4966              
===========================================
- Hits         33887    33886       -1     
  Misses        5340     5340              
  Partials      1756     1756              

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