机器人加入并播放音乐，但在断开连接并重新加入后，它会显示“机器人未连接到语音”

class RobotVoiceClient:
    def __init__(self):
        self.session_id = None
        self.is_connected = False

    def join_voice_session(self, session_id):
        self.session_id = session_id
        try:
            # 尝试连接到语音会话
            self.connect_to_session()
            self.is_connected = True
        except ConnectionError as e:
            print(f"连接失败: {e}")
            self.is_connected = False

    def reconnect_voice_session(self):
        if self.session_id:
            self.disconnect_from_session()  # 断开当前连接
            self.join_voice_session(self.session_id)  # 使用旧的session_id重新连接
        else:
            print("无法重新连接，因为会话ID丢失")

    def connect_to_session(self):
        # 实际的连接逻辑
        pass

    def disconnect_from_session(self):
        # 断开连接的逻辑
        self.is_connected = False

# 使用示例
robot = RobotVoiceClient()
robot.join_voice_session("session123")
# ... 断开连接后 ...
robot.reconnect_voice_session()