fix: modal closing animation (vbenjs#5960)

Author: ming4762

packages/@core/ui-kit/popup-ui/src/modal/modal.vue

@@ -103,7 +103,7 @@ const { dragging, transform } = useModalDraggable(
 );
 
 const firstOpened = ref(false);
-const isClosed = ref(false);
+const isClosed = ref(true);
 
 watch(
   () => state?.value?.isOpen,