chore: fix dynamic component update test

packages/svelte/test/runtime/samples/dynamic-component-update-existing-instance/_config.js

@@ -1,19 +1,19 @@
 export default {
 	get props() {
-		return { x: 1 };
+		return { x: 0 };
 	},
 
 	html: `
-		<p>Foo 1</p>
+		<p>Bar 0</p>
 	`,
 
 	test({ assert, component, target }) {
-		component.x = 2;
+		component.x = 1;
 
 		assert.htmlEqual(
 			target.innerHTML,
 			`
-			<p>Foo 2</p>
+			<p>Foo 1</p>
 		`
 		);
 	}