* Remove blank header from video room view frame
* Add a beta card for video rooms
* Rename the 'disclaimer' on beta cards to 'FAQ'
Because that's what the section actually gets used as
* Add beta pills to video room creation buttons
* Remove duplicate tooltips from face piles
* Add beta pill to headers of video rooms
* Factor RoomInfoLine out of SpaceRoomView
* Factor RoomPreviewCard out of SpaceRoomView
* Adapt RoomPreviewCard for video rooms
* "New video room" → "Video room"
* Add comment about unused cases in RoomPreviewCard
* Add types
* Clarify !important comments
* Add a reload warning
* Fix the reload warning being the wrong way around
* Fix lints
* Make widgets in video rooms mutable again to de-risk future upgrades
* Ensure that the video channel exists when mounting VideoRoomView
* Fix lint
* Iterate beta reload warning
