@const isn't available to use within a component child that uses slot="name"

[FireMakeThunder]

Describe the bug

This code won't compile though it appears it should. It happens when using an element or svelte:fragment with slot="name".

<!-- @const being used in element with named slot won't compile -->
<Component>
	{@const id = 'create-element'}
	<p slot="actions">
		{id}
	</p>
</Component>

Here's the origin of this issue: https://discord.com/channels/457912077277855764/1004908328910065735

Reproduction

https://svelte.dev/repl/ccf594828d8b4fc8b4e474d0fcb16481?version=3.49.0

Logs

No response

System Info

N/A

Severity

annoyance

[tanhauhau]

You should define the {@const} within the `slot="actions" element

<Component>
	<p slot="actions">
             {@const id = 'create-element'}
             {id}
	</p>
</Component>

whats outside is belongs to the default slot, instead of the "actions" named slot.