Feat: enhance webhook response to include status and success fields and simplify ReAct agent (#12091)

### What problem does this PR solve?

change：
enhance webhook response to include status and success fields and
simplify ReAct agent

### Type of change

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

agent/canvas.py

@@ -540,6 +540,8 @@ class Canvas(Graph):
                         cite = re.search(r"\[ID:[ 0-9]+\]",  cpn_obj.output("content"))
 
                     message_end = {}
+                    if cpn_obj.get_param("status"):
+                        message_end["status"] = cpn_obj.get_param("status")
                     if isinstance(cpn_obj.output("attachment"), dict):
                         message_end["attachment"] = cpn_obj.output("attachment")
                     if cite: