Add Compose snapshot tests for redesigned components

[gpunto]

Goal

Backfill Paparazzi snapshot coverage for Compose components introduced during the
redesigned. Also fixed the typing dot indicator's animation not being deterministic in snapshot
tests.

Implementation

• Add snapshot tests for: StreamButton, CountBadge, MessageReactions, QuotedMessage.
• Extend MessageFooterTest with an outgoing thread-start case to cover the MessageAlignment.End
  variant of MessageThreadFooter.
• Replace System.currentTimeMillis() in TypingDrawable with a ValueAnimator. The drawable now
  implements Animatable and starts/stops via Drawable.setVisible, the standard hook ImageView
  already calls on attach/detach/visibility changes. Add Paparazzi's InstantAnimationsRule to
  PaparazziViewTest so the animator settles to a deterministic frame in tests.

Testing

• New snapshot tests recorded and pass verifyPaparazziDebug.
• Existing snapshots that include a ViewAnimator-based animation, now should show a deterministic
  frame the typing indicator. Re-running verifyPaparazziDebug should no longer produces drift.

[github-actions]

PR checklist ✅

All required conditions are satisfied:

• Title length is OK (or ignored by label).
• At least one pr: label exists.
• Sections ### Goal, ### Implementation, and ### Testing are filled (or ignored for dependabot PRs).

🎉 Great job! This PR is ready for review.

[github-actions]

SDK Size Comparison 📏

SDK	Before	After	Difference	Status
stream-chat-android-client	5.82 MB	5.82 MB	0.00 MB	🟢
stream-chat-android-ui-components	11.02 MB	11.02 MB	0.00 MB	🟢
stream-chat-android-compose	12.38 MB	12.39 MB	0.01 MB	🟢

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
81.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud