chore: add `each-index-non-null` snapshot

packages/svelte/tests/snapshot/samples/each-index-non-null/_expected/client-functional/index.svelte.js

@@ -0,0 +1,19 @@
+import 'svelte/internal/disclose-version';
+import 'svelte/internal/flags/legacy';
+import * as $ from 'svelte/internal/client';
+
+var root_1 = $.template_fn([{ e: 'p' }]);
+
+export default function Each_index_non_null($$anchor) {
+	var fragment = $.comment();
+	var node = $.first_child(fragment);
+
+	$.each(node, 0, () => Array(10), $.index, ($$anchor, $$item, i) => {
+		var p = root_1();
+
+		p.textContent = `index: ${i}`;
+		$.append($$anchor, p);
+	});
+
+	$.append($$anchor, fragment);
+}