chore: migrate remaining pages to script setup (#7310)

frontend/pages/group/data/index.vue

@@ -2,15 +2,10 @@
   <div />
 </template>
 
-<script lang="ts">
-export default defineNuxtComponent({
-  setup() {
-    const router = useRouter();
-    onMounted(() => {
-      // Force redirect to first valid page
-      router.push("/group/data/foods");
-    });
-    return {};
-  },
+<script setup lang="ts">
+const router = useRouter();
+onMounted(() => {
+  // Force redirect to first valid page
+  router.push("/group/data/foods");
 });
 </script>