Early Hints do not take effect in the worker page

I use the worker to return a page, set the Link header, and preload the css file, but it does not take effect. The background configuration switch is turned on. Is this operation not supported?

return new Response(html, {
      headers: {
        "content-type": "text/html;charset=UTF-8",
        "Link": `<https://cdn.myshopline.com>; rel="preconnect", <https://cdn.myshopline.com>; rel="preconnect"; crossorigin,<https://cdn.myshopline.com/t/layout/prev/North/1.0.8/1692698183243/assets/base.css>; rel="preload"; as="style"`