add test for <a> specifically

Author: Rich-Harris

packages/svelte/tests/hydration/samples/repair-mismatched-a-href/_config.js

@@ -0,0 +1,11 @@
+import { test } from '../../test';
+
+export default test({
+	server_props: {
+		browser: false
+	},
+
+	props: {
+		browser: true
+	}
+});

packages/svelte/tests/hydration/samples/repair-mismatched-a-href/_expected.html

@@ -0,0 +1 @@
+<!--[--><a href="/foo">foo</a><!--]-->

packages/svelte/tests/hydration/samples/repair-mismatched-a-href/main.svelte

@@ -0,0 +1,5 @@
+<script>
+	let { browser } = $props();
+</script>
+
+<a href={browser ? '/foo' : '/bar'}>foo</a>