Feat: Wrap DynamicVariableForm with Collapsible. #3221 (#5440)

### What problem does this PR solve?

Feat: Wrap DynamicVariableForm with Collapsible. #3221

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/pages/agent/form-sheet/next.tsx

@@ -87,7 +87,7 @@ const FormSheet = ({
   }, [visible, form, node?.data?.form, node?.id, node, operatorName]);
 
   return (
-    <Sheet onOpenChange={hideModal} open={visible} modal={false}>
+    <Sheet open={visible} modal={false}>
       <SheetContent className="bg-white top-20" closeIcon={false}>
         <SheetHeader>
           <section className="flex-col border-b pb-2">