add test that fails with this code removed

Author: dummdidumm

packages/svelte/tests/runtime-runes/samples/static-variable-on-dynamic-text/_config.js

@@ -0,0 +1,20 @@
+import { test } from '../../test';
+
+export default test({
+	html: `
+		<p>static1 reactive1</p>
+		<button>update</button>
+	`,
+
+	async test({ assert, target }) {
+		const btn = target.querySelector('button');
+		await btn?.click();
+		assert.htmlEqual(
+			target.innerHTML,
+			`
+				<p>static1 reactive2</p>
+				<button>update</button>
+			`
+		);
+	}
+});

packages/svelte/tests/runtime-runes/samples/static-variable-on-dynamic-text/main.svelte

@@ -0,0 +1,7 @@
+<script>
+    let reactive = $state('reactive1');
+    let static_ = 'static1';
+</script>
+
+<p>{static_} {reactive}</p>
+<button onclick={() => { static_ = 'static2'; reactive = 'reactive2'; }}>update</button>