fix: stabilize message media loading [WPB-18914]

[Garzas]

https://wearezeta.atlassian.net/browse/WPB-18914

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• 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

• Opening a conversation with a large backlog of missed messages could leave the message list in an unstable loading state.
• Instead of showing a single loading phase, the conversation rendered messages progressively one by one, with many per-message loading indicators visible in the list.
• Media loading inside the conversation was tightly coupled to the message list read model, which also increased the risk of visual churn while messages were being loaded.

Causes (Optional)

• The conversation paging query depended on local asset cache data through MessageDetailsView, so writes to the Asset table could invalidate the message list while the conversation was loading.
• Local asset paths were propagated through the message read model, even though they represent local runtime/cache state rather than stable message data.
• Some media UI flows relied on local asset path data being present directly in the message model instead of resolving it on demand for the specific item.

Solutions

• Removed the dependency between conversation message paging and local asset cache writes by detaching MessageDetailsView from the Asset table and adding a forward DB migration.
• Removed local asset path from the message read model and stopped treating it as part of the main message state.
• Switched media components to resolve local asset paths on demand for the specific message item instead of loading them through the whole conversation list model.
• Updated image/video/audio-related flows so they no longer rely on local asset path being embedded in the message read model.
• Fixed follow-up media regressions caused by this refactor, including item flicker/blinking and concurrent temporary file collisions during asset downloads.

[pull-request-size]

Ups 🫰🟨

This PR is too big. Please try to break it up into smaller PRs.

[github-actions]

@Garzas looks like you are rolling back kalium to a previous commitish.

This means that the PR's target branch (develop) is using a newer version of Kalium, and the changes in this PR will rollback Kalium to an older version.

develop	This PR
9ccecabb04742ec0afa30babe9925bea7313a17c	f30c54ab5b1b985739ecbde76eeb11c7a4c7ca74

Is this intentional?

[github-actions]

@Garzas looks like you are rolling back kalium to a previous commitish.

This means that the PR's target branch (develop) is using a newer version of Kalium, and the changes in this PR will rollback Kalium to an older version.

develop	This PR
9ccecabb04742ec0afa30babe9925bea7313a17c	f30c54ab5b1b985739ecbde76eeb11c7a4c7ca74

Is this intentional?

[codecov]

Codecov Report

❌ Patch coverage is 12.50000% with 35 lines in your changes missing coverage. Please review.
✅ Project coverage is 49.71%. Comparing base (76948f5) to head (456c97e).
⚠️ Report is 1 commits behind head on develop.

Files with missing lines	Patch %	Lines
...ersations/messages/item/AssetLocalPathViewModel.kt	0.00%	28 Missing ⚠️
...dia/audiomessage/ConversationAudioMessagePlayer.kt	0.00%	3 Missing ⚠️
...ui/home/conversations/AudioMessageScopeResolver.kt	0.00%	2 Missing ⚠️
...wire/android/mapper/RegularMessageContentMapper.kt	0.00%	1 Missing ⚠️
...rsations/messages/ConversationMessagesViewModel.kt	50.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #4687      +/-   ##
===========================================
- Coverage    49.77%   49.71%   -0.07%     
===========================================
  Files          600      602       +2     
  Lines        20588    20610      +22     
  Branches      3283     3288       +5     
===========================================
- Hits         10248    10246       -2     
- Misses        9371     9398      +27     
+ Partials       969      966       -3     

Files with missing lines	Coverage Δ
...ndroid/media/audiomessage/AudioMessageViewModel.kt	81.13% <100.00%> (+0.36%)	⬆️
...id/ui/home/conversations/messages/QuotedMessage.kt	0.00% <ø> (ø)
...conversations/messages/item/SwipeableMessageBox.kt	0.00% <ø> (ø)
...ndroid/ui/home/conversations/model/MessageTypes.kt	25.00% <ø> (ø)
...e/android/ui/home/conversations/model/UIMessage.kt	39.43% <ø> (-0.07%)	⬇️
...tions/model/messagetypes/audio/AudioMessageType.kt	0.00% <ø> (ø)
...wire/android/mapper/RegularMessageContentMapper.kt	18.51% <0.00%> (+0.19%)	⬆️
...rsations/messages/ConversationMessagesViewModel.kt	67.39% <50.00%> (+0.72%)	⬆️
...ui/home/conversations/AudioMessageScopeResolver.kt	0.00% <0.00%> (ø)
...dia/audiomessage/ConversationAudioMessagePlayer.kt	67.79% <0.00%> (ø)
... and 1 more

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[sonarqubecloud]

Quality Gate failed

Failed conditions
13.5% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud