This covers the "recents" section and rough design exclusively. It is known that the Field does nothing and that there's a bunch of missing functionality - this is to be iterated upon in future PRs. Labs flag is to aide development and should be removed in a very near future PR.
Also, this is focusing on DMs and not user lists in general because I misinterpreted the scope. I'll fix this in a future PR and instead make this the best DM invite dialog it can be.
Closes https://github.com/vector-im/riot-web/issues/11197
as accountData get processed before rooms, during initial sync
or loading sync from cache, accountData gets emitted
before any room is available, hence our patching wasn't doing
anything. Just as well, because it would have failed (see next commits)
Introduces a singleton DMRoomMap that subscribes to account data to keep itself up to date so we don't have to keep doing the map inversion for each room tile.
* Add the 'is_direct' flag to rooms created for DMs
* For invites, look for the DM flag when getting the DM user ID for a room
* When accepting an invite, look for the flag and mark the room as a DM room if appropriate.
