Reduce number of Previews for Avatar.

[bmarty]

Content

Reduce number of Previews for Avatar.

Motivation and context

It will cover more cases, and it will limit the risk of conflict on screenshot, which happen each time we touch the AvatarSize enum.
Additionnaly it will reveal if there is some unused AvatarSize. And there is one: RoomInviteItem. I will remove in a later PR, I would like to work on AvatarSize but there are pending PRs touching this file, so I wait.

Screenshots / GIFs

No expected change in the app, but number of preview should decrease. It should not impact the code coverage too.

Tests

• No expected change

Tested devices

• Physical
• Emulator
• OS version(s):

Checklist

• Changes have been tested on an Android device or Android emulator with API 24
• 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
• 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 SonarQube Cloud

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.94%. Comparing base (dbc0c42) to head (d12ca1f).
⚠️ Report is 6 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #5495      +/-   ##
===========================================
- Coverage    81.94%   81.94%   -0.01%     
===========================================
  Files         2371     2371              
  Lines        67240    67223      -17     
  Branches      8117     8117              
===========================================
- Hits         55101    55084      -17     
  Misses        9162     9162              
  Partials      2977     2977              

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