Media gallery UI update

[bmarty]

Content

Small change on the media gallery following internal sync.
Figma: https://www.figma.com/design/Ni6Ii8YKtmXCKYNE90cC67/Timeline-(new)?node-id=1732-80010

Also enable the feature in production.

Motivation and context

Improve UI rendering

Screenshots / GIFs

See recorded one.

Tests

• Open the gallery and some media

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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[bmarty]

I will update this, it has to render correctly on light theme too.

[ganfra]

Why do we need this at all?

[bmarty]

It's a bg for the info (picto + duration) displayed above the video thumbnail.

[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

Attention: Patch coverage is 67.24138% with 19 lines in your changes missing coverage. Please review.

Project coverage is 83.10%. Comparing base (a69b04e) to head (e5a0576).
Report is 15 commits behind head on develop.

Files with missing lines	Patch %	Lines
...aries/mediaviewer/impl/gallery/MediaGalleryView.kt	46.15%	5 Missing and 2 partials ⚠️
.../mediaviewer/impl/gallery/MediaGalleryPresenter.kt	0.00%	4 Missing and 2 partials ⚠️
...ediaviewer/impl/details/MediaDetailsBottomSheet.kt	80.00%	0 Missing and 2 partials ⚠️
...ies/mediaviewer/impl/gallery/MediaGalleryEvents.kt	0.00%	2 Missing ⚠️
...braries/mediaviewer/impl/viewer/MediaViewerView.kt	50.00%	0 Missing and 2 partials ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #4071      +/-   ##
===========================================
- Coverage    83.11%   83.10%   -0.02%     
===========================================
  Files         1872     1872              
  Lines        48724    48723       -1     
  Branches      5698     5704       +6     
===========================================
- Hits         40498    40491       -7     
  Misses        6187     6187              
- Partials      2039     2045       +6     

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[ganfra]

Nice, thanks!