matrix-react-sdk

b9af446c - Make it possible in-code to hide rooms from the room list

Make it possible in-code to hide rooms from the room list Fixes https://github.com/vector-im/element-web/issues/15745 This was surprisingly easy given the number of errors I remember last time, but here it is. This also includes an over-engineered VisibilityProvider with the intention that it'll get used in the future for things like Spaces and other X as Rooms stuff.