message: Set which servers to try and join upgraded rooms through
  Fixes
diff: @@ -285,6 +285,10 @@ export default class MessageComposer extends React.Component {
  action: 'view_room',
  highlighted: true,
  room_id: replacementRoomId,
  +
  + // Try to join via the server that sent the event. This converts $something:example.org
  + // into a server domain by splitting on colons and ignoring the first entry ("$something").
  + via_servers: [this.state.tombstone.getId().split(':').splice(1).join(':')],
  });
  }
  