message: also update phase after starting request
  as it might now be a request that is already ongoing
diff: @@ -69,6 +69,7 @@ const EncryptionPanel = ({verificationRequest, member, onClose, layout}) => {
  const roomId = await ensureDMExists(cli, member.userId);
  const verificationRequest = await cli.requestVerificationDM(member.userId, roomId);
  setRequest(verificationRequest);
  + setPhase(verificationRequest.phase);
  }, [member.userId]);
  const requested = request && (phase === PHASE_REQUESTED || phase === undefined);
  