message: Make DeviceListener also update on megolm key in SSSS
  The device listener checks for a megolm key stored in SSSS but didn't
  update when one was added, so the encryption upgrade toast would not
  disappear after the key was fixed by
diff: @@ -160,7 +160,8 @@ export default class DeviceListener {
  // which result in account data changes affecting checks below.
  if (
  ev.getType().startsWith('m.secret_storage.') ||
  - ev.getType().startsWith('m.cross_signing.')
  + ev.getType().startsWith('m.cross_signing.') ||
  + ev.getType() === 'm.megolm_backup.v1'
  ) {
  this._recheck();
  }
  