fix: update snapshots

packages/svelte/tests/snapshot/samples/custom-renderer-server-noop/_expected/client/main.svelte.js

@@ -1,4 +1,5 @@
 import $renderer from 'my-custom-renderer';
+import 'svelte/internal/flags/custom-renderer';
 import 'svelte/internal/disclose-version';
 import * as $ from 'svelte/internal/client';
 

packages/svelte/tests/snapshot/samples/custom-renderer-single-node/_expected/client/Component.svelte.js

@@ -1,4 +1,5 @@
 import $renderer from 'my-custom-renderer';
+import 'svelte/internal/flags/custom-renderer';
 import 'svelte/internal/disclose-version';
 import * as $ from 'svelte/internal/client';
 

packages/svelte/tests/snapshot/samples/custom-renderer-single-node/_expected/client/main.svelte.js

@@ -1,4 +1,5 @@
 import $renderer from 'my-custom-renderer';
+import 'svelte/internal/flags/custom-renderer';
 import 'svelte/internal/disclose-version';
 import 'svelte/internal/flags/legacy';
 import * as $ from 'svelte/internal/client';