Add support for <!> comment shorthand

[dummdidumm]

Is your feature request related to a problem? Please describe.
The browser (jsdom, too) auto-repairs <!> tags to proper comments (e.g. <!---->). happy-dom does not do that and treats that character sequence as text. Frameworks like Svelte or Solid use this to their advantage to safe a bit of space when generating the template strings from which the component DOM tree is constructed.

Describe the solution you'd like
Add support for the shorthand, so that the following works as expected:

/**
 * @vitest-environment happy-dom
 */
import { test } from "vitest";

test("can render", () => {
  const root = document.createElement("div");
  root.innerHTML = "x<!>y";
  document.body.append(root);
  console.log(document.body.innerHTML);
  // should print <div>x<!---->y</div> , currently prints <div>x<!>y</div>
});

Describe alternatives you've considered
None

[capricorn86]

Thank you for reporting @dummdidumm! 🙂

I have made a fix now:
https://github.com/capricorn86/happy-dom/releases/tag/v14.3.6

[dummdidumm]

Thank you!