message: fix(muc): presence update for members with multiple devices
diff: @@ -83,7 +83,7 @@ export default class MultiUserPresenceProcessor {
  }
  private processNewMember() {
  - let itemElement = this.xElement.find('item');
  + let itemElement = this.xElement.find('item').first();
  let jidString = itemElement.attr('jid');
  let affiliation = itemElement.attr('affiliation');
  let role = itemElement.attr('role');
  