message: fix(Dialog): failed to render when toggling allowHtml
diff: @@ -120,7 +120,12 @@ export default createComponent({
  if (message) {
  const hasTitle = title || slots.title;
  return (
  - <div class={bem('content', { isolated: !hasTitle })}>
  + <div
  + // add key to force re-render
  + // see: https://github.com/youzan/vant/issues/7963
  + key={allowHtml ? 1 : 0}
  + class={bem('content', { isolated: !hasTitle })}
  + >
  <div
  class={bem('message', {
  'has-title': hasTitle,
  