* Move event preview to its own component
* Remove unused parameter
* Add prefix to file, audio, video and image in the pinned message banner
* Add prefix to poll in the pinned message banner
* Add tests
* Fix when an event is pinned and the banner displays the correct event.
Fix when an event is pinned and the banner displays the good event.
* Update e2e tests
* Move pinned message hooks to a dedicated file
* Add a banner at the top of a room to display the pinned messages
* Put the pinning banner behind labs pinning labs flag
* Add redacted event support
* Handle UTD in pinning message banner
* Add tests for redaction
* Make all the banner clickable
* Add tests for PinnedMessageBanner.tsx
* Add e2e tests for the pinned message banner
* Review changes