message: add query parameter
diff: @@ -55,7 +55,7 @@ export class AuthBase extends Component {
  @computed('signUpURL', 'signUpNext')
  get signUpRoute() {
  - return this.features.isEnabled(featureFlagNames.routes.register) ? 'register' :
  + return this.features.isEnabled(featureFlagNames.routes.register) ? `register?${param(this.signUpQueryParams)}` :
  `${this.signUpURL}?${param(this.signUpQueryParams)}`;
  }
  