svelte: `@html` content in `` is duplicated

Describe the bug

simple json object of json-ld will be duplicated with injecting into the document with <svelte:head>. The tag will be rendered twice.

I use a function like this:

export const mkSchema = (thing: Schema) => {
	return `<script type="application/ld+json">${JSON.stringify(thing, null, 2)}</script>`;
};

And render like this:

<svelte:head>
    {@html mkSchema(orgSchema)}
</svelte:head>

Reproduction

https://github.com/winston0410/duplicate-head

Logs

No response

System Info

System:
    OS: macOS 11.4
    CPU: (8) arm64 Apple M1
    Memory: 123.59 MB / 8.00 GB
    Shell: 5.8 - /bin/zsh
  Binaries:
    Node: 17.8.0 - /opt/homebrew/bin/node
    Yarn: 1.22.17 - /opt/homebrew/bin/yarn
    npm: 8.5.5 - /opt/homebrew/bin/npm
  Browsers:
    Brave Browser: 99.1.36.119
    Safari: 14.1.1
  npmPackages:
    @sveltejs/adapter-auto: next => 1.0.0-next.34 
    @sveltejs/kit: next => 1.0.0-next.310 
    svelte: ^3.44.0 => 3.47.0

Severity

blocking all usage of SvelteKit

Additional Information

It will greatly affect the SEO of sveltekit as structured data cannot be used