exclude internal props from spread attributes

packages/svelte/src/internal/client/render.js

@@ -2843,6 +2843,8 @@ export function spread_attributes(dom, prev, attrs, css_hash) {
 	if (!setters) map_set(setters_cache, dom.nodeName, (setters = get_setters(dom)));
 
 	for (const key in next) {
+		if (key.startsWith('$$')) continue;
+
 		let value = next[key];
 		if (has_hash && key === 'class') {
 			if (value) value += ' ';

packages/svelte/tests/runtime-runes/samples/event-listener-spread/Button.svelte

@@ -0,0 +1,7 @@
+<script>
+	let { ...stuff } = $props();
+</script>
+
+<button {...stuff} on:click>
+	<slot></slot>
+</button>

packages/svelte/tests/runtime-runes/samples/event-listener-spread/_config.js

@@ -0,0 +1,13 @@
+import { test } from '../../test';
+
+export default test({
+	html: `<button>clicks: 0</button>`,
+
+	async test({ assert, target }) {
+		const button = target.querySelector('button');
+
+		button?.click();
+		await Promise.resolve();
+		assert.htmlEqual(target.innerHTML, '<button>clicks: 1</button>');
+	}
+});

packages/svelte/tests/runtime-runes/samples/event-listener-spread/main.svelte

@@ -0,0 +1,13 @@
+<script>
+	import Button from './Button.svelte';
+
+	let count = $state(0);
+
+	function increment() {
+		count += 1;
+	}
+</script>
+
+<Button on:click={increment}>
+	clicks: {count}
+</Button>