* Add Voice Broadcast labs setting and composer button
* Implement strict typing
* Extend MessageComposer-test
* Extend tests
* Revert some strict type fixex
* Convert FEATURES to enum; change case
* Use fake timers in MessageComposer-test
* Revert "Prevent new composer from overflowing from non-breakable text (#8829)"
This reverts commit 57dff8131c.
* Revert "Fix scroll jump issue with the composer (#8791)"
This reverts commit 5167521ea4.
* Revert "Fix scroll jump issue with the composer (#8788)"
This reverts commit f568a76dc6.
* Revert "Revert link color change in composer (#8784)"
This reverts commit aedbeb2995.
* Revert "Improve composer visiblity (#8578)"
This reverts commit f14374a51c.