message: fix(md-enhance): fix playground loading issue
diff: -import { defineComponent, h, ref } from "vue";
  +import { defineComponent, h } from "vue";
  -import { LOADING_SVG, PLAY_SVG } from "./icons.js";
  +import { PLAY_SVG } from "./icons.js";
  import type { VNode } from "vue";
  @@ -16,8 +16,6 @@ export default defineComponent({
  },
  setup(props) {
  - const loading = ref(true);
  -
  return (): (VNode | null)[] => [
  h("div", { class: "playground-wrapper" }, [
  h("div", { class: "title-wrapper" }, [
  @@ -33,21 +31,14 @@ export default defineComponent({
  }),
  ]),
  ]),
  - h("div", { class: "preview-container" }, [
  - loading.value
  - ? h("div", {
  - class: ["preview-loading-wrapper"],
  - innerHTML: LOADING_SVG,
  - })
  - : null,
  + h(
  + "div",
  + { class: "preview-container" },
  h("iframe", {
  class: "iframe-preview",
  src: decodeURIComponent(props.link),
  - onload: () => {
  - loading.value = false;
  - },
  - }),
  - ]),
  + })
  + ),
  ]),
  ];
  },
  