Feat: Downstream operators can get the variables defined by the user input operator #3221 (#9036)

### What problem does this PR solve?

Feat: Downstream operators can get the variables defined by the user
input operator #3221

### Type of change


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

web/src/pages/agent/constant.tsx

@@ -582,6 +582,7 @@ export const initialUserFillUpValues = {
   enable_tips: true,
   tips: '',
   inputs: [],
+  outputs: {},
 };
 
 export enum StringTransformMethod {
@@ -835,6 +836,7 @@ export const NoDebugOperatorsList = [
   Operator.RewriteQuestion,
   Operator.Switch,
   Operator.Iteration,
+  Operator.UserFillUp,
 ];
 
 export enum NodeHandleId {