chore: remove `prevent-template-cloning` test

packages/svelte/tests/snapshot/samples/prevent-template-cloning/_config.js

@@ -1,7 +0,0 @@
-import { test } from '../../test';
-
-export default test({
-	compileOptions: {
-		preventTemplateCloning: true
-	}
-});

packages/svelte/tests/snapshot/samples/prevent-template-cloning/_expected/client/index.svelte.js

@@ -1,49 +0,0 @@
-import 'svelte/internal/disclose-version';
-import * as $ from 'svelte/internal/client';
-
-function increment(_, counter) {
-	counter.count += 1;
-}
-
-var root = () => {
-	var button = document.createElement('button');
-	var text = document.createTextNode(' ');
-
-	button.insertBefore(text, undefined)
-
-	var text_1 = document.createTextNode(' ');
-	var comment = document.createComment('');
-	var text_2 = document.createTextNode(' ');
-	var fragment = document.createDocumentFragment();
-
-	fragment.append(button, text_1, comment, text_2)
-	return fragment;
-};
-
-export default function Prevent_template_cloning($$anchor) {
-	let counter = $.proxy({ count: 0 });
-	const promise = $.derived(() => Promise.resolve(counter));
-	var fragment = root();
-	var button = $.first_child(fragment);
-
-	button.__click = [increment, counter];
-
-	var text = $.child(button);
-
-	$.reset(button);
-
-	var node = $.sibling(button, 2);
-
-	$.await(node, () => $.get(promise), null, ($$anchor, counter) => {});
-
-	var text_1 = $.sibling(node);
-
-	$.template_effect(() => {
-		$.set_text(text, `clicks: ${counter.count ?? ''}`);
-		$.set_text(text_1, ` ${counter.count ?? ''}`);
-	});
-
-	$.append($$anchor, fragment);
-}
-
-$.delegate(['click']);

packages/svelte/tests/snapshot/samples/prevent-template-cloning/_expected/server/index.svelte.js

@@ -1,14 +0,0 @@
-import * as $ from 'svelte/internal/server';
-
-export default function Prevent_template_cloning($$payload) {
-	let counter = { count: 0 };
-	const promise = Promise.resolve(counter);
-
-	function increment() {
-		counter.count += 1;
-	}
-
-	$$payload.out += `<button>clicks: ${$.escape(counter.count)}</button> <!---->`;
-	$.await(promise, () => {}, (counter) => {}, () => {});
-	$$payload.out += `<!----> ${$.escape(counter.count)}`;
-}

packages/svelte/tests/snapshot/samples/prevent-template-cloning/index.svelte

@@ -1,16 +0,0 @@
-<script>
-	let counter = $state({ count: 0 });
-	const promise = $derived(Promise.resolve(counter))
-
-	function increment() {
-		counter.count += 1;
-	}
-</script>
-
-<button onclick={increment}>
-	clicks: {counter.count}
-</button>
-
-{#await promise then counter}{/await}
-
-{counter.count}