Feat: Add UserFillUpForm component #3221 (#8508)

### What problem does this PR solve?

Feat: Add UserFillUpForm component #3221

### Type of change


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

web/src/pages/agent/canvas/node/dropdown/next-step-dropdown.tsx

@@ -67,7 +67,9 @@ function AccordionOperators() {
       <AccordionItem value="item-2">
         <AccordionTrigger className="text-xl">Dialogue </AccordionTrigger>
         <AccordionContent className="flex flex-col gap-4 text-balance">
-          <OperatorItemList operators={[Operator.Message]}></OperatorItemList>
+          <OperatorItemList
+            operators={[Operator.Message, Operator.UserFillUp]}
+          ></OperatorItemList>
         </AccordionContent>
       </AccordionItem>
       <AccordionItem value="item-3">