docs(input-menu/select-menu/select): add example with full item width (#4419)

Co-authored-by: Benjamin Canac <canacb1@gmail.com>

docs/app/components/content/examples/select/SelectFetchExample.vue

@@ -24,8 +24,8 @@ function getUserAvatar(value: string) {
     :loading="status === 'pending'"
     icon="i-lucide-user"
     placeholder="Select user"
-    class="w-48"
     value-key="value"
+    class="w-48"
   >
     <template #leading="{ modelValue, ui }">
       <UAvatar