message: fix: onLoaded callback not run on spec error
  fixes
diff: @@ -52,7 +52,14 @@ export class StoreBuilder extends Component<StoreBuilderProps, StoreBuilderState
  if (!spec) {
  return undefined;
  }
  + try {
  return new AppStore(spec, specUrl, options);
  + } catch (e) {
  + if (this.props.onLoaded) {
  + this.props.onLoaded(e);
  + }
  + throw e;
  + }
  }
  componentDidMount() {
  