Fix: only preconnect nitro URL if absolute (prevents crash on relative URLs like /nitro-client/)

src/app/layout.tsx

@@ -70,7 +70,7 @@ export default async function RootLayout({ children }: { children: ReactNode })
         <script src="/scripts/theme-init.js" />
         <link rel="preconnect" href="https://www.habbo.com" />
         <link rel="dns-prefetch" href="https://www.habbo.com" />
-        {nitroUrl ? (
+        {nitroUrl && nitroUrl.startsWith("http") ? (
           <link rel="preconnect" href={new URL(nitroUrl).origin} />
         ) : null}
       </head>