Fix diff highlighting for specific example

Author: Marat5

apps/svelte.dev/content/tutorial/01-svelte/05-events/04-component-events/+assets/app-a/src/lib/Stepper.svelte

@@ -1,5 +1,4 @@
 <script>
-	let {} = $props();
 </script>
 
 <button>-1</button>

apps/svelte.dev/content/tutorial/01-svelte/05-events/04-component-events/index.md

@@ -7,7 +7,7 @@ You can pass event handlers to components like any other prop. In `Stepper.svelt
 ```svelte
 /// file: Stepper.svelte
 <script>
-	let { +++increment, decrement+++ } = $props();
+	+++let { increment, decrement } = $props();+++
 </script>
 ```