chore: squelch hydration warnings (#17509)

* chore: squelch some hydration warnings

* squelch another warning

packages/svelte/tests/hydration/samples/no-reset-debug/_config.js

@@ -1,3 +1,15 @@
 import { test } from '../../test';
 
-export default test({});
+/** @type {typeof console.log} */
+let log;
+
+export default test({
+	before_test() {
+		log = console.log;
+		console.log = () => {};
+	},
+
+	after_test() {
+		console.log = log;
+	}
+});

packages/svelte/tests/hydration/test.ts

@@ -53,6 +53,8 @@ const { test, run } = suite<HydrationTest>(async (config, cwd) => {
 		await compile_directory(cwd, 'server', config.compileOptions);
 	}
 
+	config.before_test?.();
+
 	const target = window.document.body;
 	const head = window.document.head;
 
@@ -72,8 +74,6 @@ const { test, run } = suite<HydrationTest>(async (config, cwd) => {
 		head.innerHTML = override_head ?? rendered.head;
 	}
 
-	config.before_test?.();
-
 	try {
 		const snapshot = config.snapshot ? config.snapshot(target) : {};
 

packages/svelte/tests/server-side-rendering/samples/hydratable-clobbering-complicated/main.svelte

@@ -1,16 +1,21 @@
 <script lang="ts">
     import { hydratable } from 'svelte';
 
-    hydratable('key', () => Promise.resolve({
+    const a = await hydratable('key', () => Promise.resolve({
         nested: Promise.resolve({
             one: Promise.resolve(1),
         }),
         two: Promise.resolve(2),
     }));
-    hydratable('key', () => Promise.resolve({
+    const b = await hydratable('key', () => Promise.resolve({
         nested: Promise.resolve({
             one: Promise.resolve(2),
         }),
         two: Promise.resolve(2),
     }));
 </script>
+
+<p>{await (await (a.nested)).one}</p>
+<p>{await a.two}</p>
+<p>{await (await (b.nested)).one}</p>
+<p>{await b.two}</p>