fix(Accordion): missing ref import from vue

src/runtime/components/elements/Accordion.vue

@@ -40,7 +40,7 @@
 </template>
 
 <script lang="ts">
-import { defineComponent, computed } from 'vue'
+import { ref, computed, defineComponent } from 'vue'
 import type { PropType } from 'vue'
 import { Disclosure as HDisclosure, DisclosureButton as HDisclosureButton, DisclosurePanel as HDisclosurePanel } from '@headlessui/vue'
 import { defu } from 'defu'