chore(e2e): revert vite.config.js

packages/playground/ssr/vite.config.js

+import { defineConfig } from 'vite'
+import uni from '@dcloudio/vite-plugin-uni'
+/**
+ * @type {import('vite').UserConfig}
+ */
+export default defineConfig({
+  build: { minify: false },
+  plugins: [uni({ viteLegacyOptions: false })],
+})