message: chore: use iframe worker messenger
diff: import React, {useEffect, useMemo, useState} from 'react';
  import {RemoteReceiver, RemoteRenderer} from '@shopify/remote-ui-react/host';
  -import {createWorkerFactory, useWorker} from '@shopify/react-web-worker';
  +import {
  + createWorkerFactory,
  + useWorker,
  + createIframeWorkerMessenger,
  +} from '@shopify/react-web-worker';
  import {
  ExtensionPoint,
  ExtractedInputFromRenderExtension,
  @@ -37,7 +41,9 @@ export function AppExtension<T extends ExtensionPoint>({
  return null;
  }
  - const worker = useWorker(createWorker);
  + const worker = useWorker(createWorker, {
  + createMessenger: createIframeWorkerMessenger,
  + });
  const receiver = useMemo(() => new RemoteReceiver(), []);
  const [ref, layoutInput] = useLayoutInput();
  