fix: apply correct snippet scope (#9623)

Author: trueadm

.changeset/serious-zebras-scream.md

@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: ensure snippets have correct scope

packages/svelte/src/compiler/phases/scope.js

@@ -557,6 +557,7 @@ export function create_scopes(ast, root, allow_reactive_declarations, parent) {
 		},
 
 		SnippetBlock(node, context) {
+			const state = context.state;
 			// Special-case for root-level snippets: they become part of the instance scope
 			const is_top_level = !context.path.at(-2);
 			let scope = state.scope;

packages/svelte/tests/runtime-runes/samples/snippet-scope/Component.svelte

@@ -0,0 +1,7 @@
+<script>
+	let { inner } = $props();
+</script>
+
+{#if inner}
+	{@render inner()}
+{/if}

packages/svelte/tests/runtime-runes/samples/snippet-scope/_config.js

@@ -0,0 +1,5 @@
+import { test } from '../../test';
+
+export default test({
+	html: `<p>S</p><a href="#">S</a><p>v</p><a href="#">v</a><p>e</p><a href="#">e</a><p>l</p><a href="#">l</a><p>t</p><a href="#">t</a><p>e</p><a href="#">e</a>`
+});

packages/svelte/tests/runtime-runes/samples/snippet-scope/main.svelte

@@ -0,0 +1,13 @@
+<script>
+	import Component from './Component.svelte';
+	let name = "Svelte";
+</script>
+
+{#each name.split('') as character}
+	<p>{character}</p>
+	<Component>
+		{#snippet inner()}
+			<a href={'#'}>{character}</a>
+		{/snippet}
+	</Component>
+{/each}