When using `window.onerror` in the bootstrap script that is hosted in a CDN the error message will show `"Script error."` instead of a proper error message. This is because of the [cross-origin](https://blog.sentry.io/2016/05/17/what-is-script-error/) script. To fix this issue a `crossorigin="anonymous"` attribute needs to be added in the script tag.

Currently, `bootstrapScripts` supports [`src` and `integrity`](https://github.com/facebook/react/blob/0fce6bb498357feb4465859912004b2e20fe7084/packages/react-dom-bindings/src/server/ReactDOMServerFormatConfig.js#L226) as configurations, should it also supports a `crossorigin` property?


'React needs it to encode which action should be invoked. It will get overridden.',
        );
      }
      if (
        (formEncType !== null || formMethod !== null) &&
        !didWarnFormActionMethod
      ) {
        didWarnFormActionMethod = true;
        console.error(
          'Cannot specify a formEncType or formMethod for a button that specifies a ' +
            'function as a formAction. React provides those automatically. They will get overridden.',
        );
      }
      if (formTarget !== null && !didWarnFormActionTarget) {
        didWarnFormActionTarget = true;
        console.error(
          'Cannot specify a formTarget for a button that specifies a function as a formAction. ' +
            'The function will always be executed in the same window.',
        );
      }
    }
    const customAction: ReactCustomFormAction = formAction.$$FORM_ACTION;
    if (typeof customAction === 'function') {
      
      
      const prefix = makeFormFieldPrefix(responseState);
      const customFields = formAction.$$FORM_ACTION(prefix);
      name = customFields.name;
      formAction = customFields.action || '';
      formEncType = customFields.encType;