Be more lenient with the power levels as they can still be missing at the time the various screens are created e.g. after accepting an invite.

The correct solution is to subscribe to update and update the UI accordingly when receiving them.

ElementX/Sources/Screens/RoomDetailsScreen/RoomDetailsScreenViewModel.swift

@@ -179,7 +179,7 @@ class RoomDetailsScreenViewModel: RoomDetailsScreenViewModelType, RoomDetailsScr
     
     private func setupRoomSubscription() {
         roomProxy.infoPublisher
-            .throttle(for: .milliseconds(200), scheduler: DispatchQueue.main, latest: true)
+            .receive(on: DispatchQueue.main)
             .sink { [weak self] roomInfo in
                 self?.updateRoomInfo(roomInfo)
             }
@@ -233,8 +233,6 @@ class RoomDetailsScreenViewModel: RoomDetailsScreenViewModelType, RoomDetailsScr
             state.canBanUsers = powerLevels.canOwnUserBan()
             state.canJoinCall = powerLevels.canOwnUserJoinCall()
             state.canEditRolesOrPermissions = powerLevels.suggestedRole(forUser: roomProxy.ownUserID) == .administrator
-        } else {
-            fatalError("Missing room power levels")
         }
     }