fix(runtime): destroy missing fragment

src/runtime/internal/dom.ts

@@ -203,7 +203,7 @@ export function insert_hydration(target: NodeEx, node: NodeEx, anchor?: NodeEx)
 }
 
 export function detach(node: Node) {
-	node.parentNode.removeChild(node);
+	node.parentNode?.removeChild(node);
 }
 
 export function destroy_each(iterations, detaching) {

test/runtime/samples/destroy-missing-fragment/_config.js

@@ -0,0 +1,5 @@
+export default {
+	test({ component }) {
+		component.$destroy();
+	}
+};

test/runtime/samples/destroy-missing-fragment/main.svelte

@@ -0,0 +1,9 @@
+<script>
+	import { onMount } from 'svelte';
+    let e;
+    onMount(() => {
+        e.remove();
+    })
+</script>
+
+<div bind:this={e} />