Remove inner message from thread M1 orchestrator (#4611)

remove inner message from thread

python/packages/autogen-agentchat/src/autogen_agentchat/teams/_group_chat/_magentic_one/_magentic_one_orchestrator.py

@@ -166,12 +166,11 @@ async def handle_start(self, message: GroupChatStart, ctx: MessageContext) -> No
 
     @event
     async def handle_agent_response(self, message: GroupChatAgentResponse, ctx: MessageContext) -> None:  # type: ignore
-        self._message_thread.append(message.agent_response.chat_message)
         delta: List[AgentMessage] = []
         if message.agent_response.inner_messages is not None:
             for inner_message in message.agent_response.inner_messages:
-                self._message_thread.append(inner_message)
                 delta.append(inner_message)
+        self._message_thread.append(message.agent_response.chat_message)
         delta.append(message.agent_response.chat_message)
 
         if self._termination_condition is not None: