Wrong missing-declaration warning when using let'ed variable on same node

[dummdidumm]

Describe the bug
Wrong svelte(missing-declaration) warning when using a variable on the same slot node where it was instantiated via a let:X statement but using it before that instantiation.

To Reproduce
This code

<script>
	import Bla from './Bla.svelte';
</script>

<Bla>
	<div slot="foo" class:bar let:bar>.</div>
</Bla>

produces a wrong svelte(missing-declaration) warning for bar. If I put class:bar behind let:bar, the error goes away. Code compiles just fine in both cases.

Expected behavior
No warning.

Information about your Svelte project:
Any browser, any system, Svelte 3.32.3

Severity
Inconvenient, an easy workaround exists

Additional context
Originally reported by @brunnerh in sveltejs/language-tools#817 (comment)

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[ngtr6788]

Seems like this issue is already fixed in the current version: https://svelte.dev/repl/fff8141cb1a84a0787a9ec16a5896029?version=4.1.2