Feat: Verify the parameters of the begin operator #3221 (#7794)

### What problem does this PR solve?

Feat: Verify the parameters of the begin operator #3221

### Type of change


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

web/src/pages/agent/constant.tsx

@@ -3006,3 +3006,8 @@ export const NoDebugOperatorsList = [
   Operator.Switch,
   Operator.Iteration,
 ];
+
+export enum AgentDialogueMode {
+  Conversational = 'Conversational',
+  Task = 'Task',
+}