We actually never use the
roomId of this type and the
matrix spec has changed in
a way that the roomId is
never sent there actually. So
it was super easy to just
replace all BasicRoomEvent
with BasicEvent. The roomId
became nullable anyway.
When decrypting the last event for archived rooms when a room key is
received, we used to send a synthetic SyncUpdate. This however put the
archived room into the join section, which converted the room to a
joined room. We need to respect what section the room was in when
sending synthetic SyncUpdates.
fixes https://github.com/famedly/matrix-dart-sdk/issues/1916