Revert "Unify workspace dropdowns; Update layouts (#458)"

This reverts commit 4bc8448a1d.

apps/web/app/admin/page.tsx

@@ -0,0 +1,17 @@
+import { AdminDashboard } from '@kit/admin/components/admin-dashboard';
+import { AdminGuard } from '@kit/admin/components/admin-guard';
+import { PageBody, PageHeader } from '@kit/ui/page';
+
+function AdminPage() {
+  return (
+    <>
+      <PageHeader description={`Super Admin`} />
+
+      <PageBody>
+        <AdminDashboard />
+      </PageBody>
+    </>
+  );
+}
+
+export default AdminGuard(AdminPage);