## Summary
- Keep jump-to-latest hidden through composer and keyboard layout
changes while the user is still following the tail.
- Stabilize thread tail detection during lazy scroll updates.
- Unmount inactive iOS Liquid Glass controls so the channel arrow cannot
bleed into an opened thread.
## Testing
- just mobile-check
- flutter test (1,864 passed)
- Signed iOS Release build and install on iPhone Air
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Signed-off-by: kenny lopez <klopez4212@gmail.com>
58cc4b7e9b