[Svelte 5] Dark mode dropdown example needs to be updated

[hhvrc]

Change Type

Correction

Proposed Changes

https://www.shadcn-svelte.com/docs/dark-mode/svelte#add-a-mode-toggle

The dropdown menu example uses the component let: directive.

In svelte 5 this causes an error:

Svelte error: invalid_default_snippet
Cannot use `{@render children(...)}` if the parent component uses `let:` directives. Consider using a named snippet instead

[hhvrc]

I just realized i linked the old documentation and not the new svelte 5 one, closing issue. 😐