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/input-menu/InputMenuContentWidthExample.vue

@@ -0,0 +1,31 @@
+<script setup lang="ts">
+const { data: users } = await useFetch('https://jsonplaceholder.typicode.com/users', {
+  key: 'typicode-users-email',
+  transform: (data: { id: number, name: string, email: string }[]) => {
+    return data?.map(user => ({
+      label: user.name,
+      value: String(user.id),
+      email: user.email,
+      avatar: { src: `https://i.pravatar.cc/120?img=${user.id}` }
+    }))
+  },
+  lazy: true
+})
+</script>
+
+<template>
+  <UInputMenu
+    :items="users"
+    icon="i-lucide-user"
+    placeholder="Select user"
+    :ui="{ content: 'min-w-fit' }"
+  >
+    <template #item-label="{ item }">
+      {{ item.label }}
+
+      <span class="text-muted">
+        {{ item.email }}
+      </span>
+    </template>
+  </UInputMenu>
+</template>