fix(InputMenu/SelectMenu): init filter with labelKey

docs/app/components/content/examples/input-menu/InputMenuCountriesExample.vue

@@ -19,7 +19,6 @@ function onOpen() {
     :items="countries || []"
     :loading="status === 'pending'"
     label-key="name"
-    :filter="['name']"
     :search-input="{ icon: 'i-lucide-search' }"
     placeholder="Select country"
     class="w-48"

docs/app/components/content/examples/input-menu/InputMenuFilterFieldsExample.vue

@@ -16,7 +16,7 @@ const { data: users, status } = await useFetch('https://jsonplaceholder.typicode
   <UInputMenu
     :items="users || []"
     :loading="status === 'pending'"
-    :filter="['name', 'email']"
+    :filter="['label', 'email']"
     icon="i-lucide-user"
     placeholder="Select user"
     class="w-80"