Fix broken direct room member for rooms with old users that left (#3324)

This patch fixes getDirectRoomMember not respecting direct rooms
with more than two members total but only two active. This commonly
occurs when users migrate to a new account by adding a new account
to rooms and leaving with the old one.

Other parts of the codebase (such as the people room list filter)
already respect the active member count of a room instead of the
total (historic) number of unique members.

This fixes the room details screen not showing up correctly, for
example missing the avatar cluster.

Signed-off-by: networkException <[email protected]>

Author: networkException

libraries/matrixui/src/main/kotlin/io/element/android/libraries/matrix/ui/room/MatrixRoomMembers.kt

@@ -58,6 +58,7 @@ fun MatrixRoom.getDirectRoomMember(roomMembersState: MatrixRoomMembersState): St
     return remember(roomMembersState) {
         derivedStateOf {
             roomMembers
+                ?.filter { it.membership.isActive() }
                 ?.takeIf { it.size == 2 && isDirect && isEncrypted }
                 ?.find { it.userId != sessionId }
         }