feat: Use preview middleware in prerendered apps

Author: rschristian

templates/config/prerender-router/vite.config.js

@@ -9,6 +9,8 @@ export default defineConfig({
 enabled: true,
 renderTarget: '#app',
 additionalPrerenderRoutes: ['/404'],
+previewMiddlewareEnabled: true,
+previewMiddlewareFallback: '/404',
 },
 }),
 ],