message: show to_device verification in dialog, not right panel
  this also makes it work again, as the VerificationPanel doens't
  know how to deal with requests that are already in PHASE_STARTED,
  which was breaking verifying your own devices.
diff: @@ -23,6 +23,7 @@ import {RIGHT_PANEL_PHASES} from "../../../stores/RightPanelStorePhases";
  import {userLabelForEventRoom} from "../../../utils/KeyVerificationStateObserver";
  import dis from "../../../dispatcher";
  import ToastStore from "../../../stores/ToastStore";
  +import Modal from "../../../Modal";
  export default class VerificationRequestToast extends React.PureComponent {
  constructor(props) {
  @@ -79,6 +80,12 @@ export default class VerificationRequestToast extends React.PureComponent {
  phase: RIGHT_PANEL_PHASES.EncryptionPanel,
  refireParams: {verificationRequest: request},
  });
  + } else if (request.channel.deviceId && request.verifier) {
  + // show to_device verifications in dialog still
  + const IncomingSasDialog = sdk.getComponent("views.dialogs.IncomingSasDialog");
  + Modal.createTrackedDialog('Incoming Verification', '', IncomingSasDialog, {
  + verifier: request.verifier,
  + }, null, /* priority = */ false, /* static = */ true);
  }
  } catch (err) {
  console.error(err.message);
  