refactor(grants): wrap grant list in SingleChildScrollView

useragent/lib/screens/dashboard/evm/grants/grants.dart

@@ -19,8 +19,6 @@ String _formatError(Object error) {
   return message;
 }
 
-// ─── Grant list ───────────────────────────────────────────────────────────────
-
 class _GrantList extends StatelessWidget {
   const _GrantList({required this.grants});
 
@@ -28,7 +26,8 @@ class _GrantList extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return Column(
+    return SingleChildScrollView(
+      child: Column(
         children: [
           for (var i = 0; i < grants.length; i++)
             Padding(
@@ -38,12 +37,11 @@ class _GrantList extends StatelessWidget {
               child: GrantCard(grant: grants[i]),
             ),
         ],
+      ),
     );
   }
 }
 
-// ─── Screen ───────────────────────────────────────────────────────────────────
-
 @RoutePage()
 class EvmGrantsScreen extends ConsumerWidget {
   const EvmGrantsScreen({super.key});