feat(channels): distinguish channels in conversation list [WPB-15865]

[vitorhugods]

WPB-15865 [Android] Show channels in conversation list

---

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

---

What's new in this PR?

Channels are properly displayed in Conversation List, with the correct icon.

Introduced the isChannel attribute to distinguish channel conversations across data models and UI components for the conversation list. Updated ConversationMapper and related UI logic to handle channel-specific behavior, including rendering appropriate avatars. Added previews to validate the new functionality in different states.

Testing

Not added, as it only changes UI.

Attachments

Dark Theme	Light Theme

---

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.

---

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]

Please retry analysis of this Pull-Request directly on SonarQube Cloud

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 45.60%. Comparing base (ef3fdcb) to head (99bd1c0).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #3924   +/-   ##
========================================
  Coverage    45.59%   45.60%           
========================================
  Files          492      492           
  Lines        17090    17092    +2     
  Branches      2852     2852           
========================================
+ Hits          7793     7795    +2     
  Misses        8505     8505           
  Partials       792      792           

Files with missing lines	Coverage Δ
...tlin/com/wire/android/mapper/ConversationMapper.kt	64.86% <100.00%> (+0.31%)	⬆️
...i/home/conversationslist/model/ConversationItem.kt	55.05% <100.00%> (+0.51%)	⬆️

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update ef3fdcb...99bd1c0. Read the comment docs.

🚀 New features to boost your workflow:

• ❄ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[github-actions]

Built wire-android-staging-compat-pr-3924.apk is available for download

[github-actions]

Built wire-android-dev-debug-pr-3924.apk is available for download