message: fix: received file uploads in muc
  fix
diff: @@ -12,7 +12,7 @@ export default class extends AbstractHandler {
  let messageElement = $(stanza);
  let from = new JID(stanza.getAttribute('from'));
  let subjectElement = messageElement.find('subject');
  - let bodyElement = messageElement.find('body:first');
  + let bodyElement = messageElement.find('>body:first');
  let originId = messageElement.find('origin-id[xmlns="urn:xmpp:sid:0"]').attr('id');
  let stanzaId = messageElement.find('stanza-id[xmlns="urn:xmpp:sid:0"]').attr('id');
  let attrId = messageElement.attr('id');
  