fix admin redirect loop

src/app/admin/layout.tsx

@@ -1,10 +1,14 @@
+import { redirect } from "next/navigation";
+import { isAdmin } from "~/app/actions";
 import { SidebarProvider } from "~/components/ui/sidebar";
 import AdminSideBar from "./_components/AdminSideBar";
 import { ScrollArea } from "~/components/ui/scroll-area";
 
 export const dynamic = 'force-dynamic';
 
-export default function Admin({children}: Readonly<{children: React.ReactNode}>) {
+export default async function Admin({children}: Readonly<{children: React.ReactNode}>) {
+  if (!(await isAdmin())) redirect("/");
+
   return (
     <>
       <SidebarProvider>