Describe the bug

The <svelte:boundary> do nothing on SSR !

On the REPL we can see that code like this :

<svelte:boundary>
	template
	{#snippet failed()}
		error
	{/snippet}
</svelte:boundary>

Will generate this server code :

	{
		function failed($$payload) {
			$$payload.out += `<!---->error`;
		}

		$$payload.out += `<!---->template`;
	}

The template is written, but there no try/catch and the failed() snippet is never caller when an error occurs in the template !

Actually this will produce an HTTP 500 error :(

I think it should render the failed() snippet instead...

Reproduction

Click on the links "Bad page" and "Good page" to see that the error is handheld on client-site.
Then, when on the "Bad page", click on the "reload to force SSR" button to regenerate the page via SSR... => HTTP 500

https://www.sveltelab.dev/ravzziihmogkq1a

Logs

System Info

Done on sveltelabs with last version

Severity

annoyance