fix: bubble colors for multipart assets [WPB-22232]

[saleniuk]

WPB-22232 [Android] wrong bubble colors for multipart assets

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PR Submission Checklist for internal contributors

• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • contains a reference JIRA issue number like SQPIT-764
  • answers the question: If merged, this PR will: ... ³

• The PR Description

  • is free of optional paragraphs and you have filled the relevant parts to the best of your ability

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What's new in this PR?

Issues

The bubble colors for multipart assets haven’t been updated after the recent changes in bubbles designs.

Solutions

Updated bubble colors for multipart assets and fixed borders/cropping for some types.
Removed some outdated color scheme fields that should be already removed.
Implemented a preview object for multipart view model and mocks to be able to preview multipart assets message type.

Attachments (Optional)

Before	After

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PR Post Submission Checklist for internal contributors (Optional)

• Wire's Github Workflow has automatically linked the PR to a JIRA issue

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PR Post Merge Checklist for internal contributors

• If any soft of configuration variable was introduced by this PR, it has been added to the relevant documents and the CI jobs have been updated.

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References

1. https://sparkbox.com/foundry/semantic_commit_messages
2. https://github.com/wireapp/.github#usage
3. E.g. feat(conversation-list): Sort conversations by most emojis in the title #SQPIT-764.

[sonarqubecloud]

Quality Gate failed

Failed conditions
18.1% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

❌ Patch coverage is 81.25000% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 47.41%. Comparing base (d078be5) to head (031de5f).

Files with missing lines	Patch %	Lines
...getypes/multipart/MultipartAttachmentsViewModel.kt	81.25%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #4466      +/-   ##
===========================================
- Coverage    47.43%   47.41%   -0.02%     
===========================================
  Files          536      536              
  Lines        18127    18130       +3     
  Branches      3068     3068              
===========================================
- Hits          8599     8597       -2     
- Misses        8602     8607       +5     
  Partials       926      926              

Files with missing lines	Coverage Δ
...messagetypes/multipart/MultipartAttachmentsView.kt	0.00% <ø> (ø)
...ssagetypes/multipart/standalone/PdfAssetPreview.kt	0.00% <ø> (ø)
...agetypes/multipart/standalone/VideoAssetPreview.kt	0.00% <ø> (ø)
...getypes/multipart/MultipartAttachmentsViewModel.kt	57.83% <81.25%> (-4.67%)	⬇️

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