chore: fix auto import issue

Author: koca

packages/layout/examples/base-simple-grid.vue

@@ -16,7 +16,7 @@
   </c-simple-grid>
 </template>
 <script setup lang="ts">
-import { ref } from 'vue-demi'
+import { ref } from 'vue'
 
 const minw = ref('100px')
 </script>