docs: def clear_step_handler_by_chat_id(self, chat_id):
          """
          Clears all callback functions registered by register_next_step_handler().
  
          :param chat_id: The chat for which we want to clear next step handlers
          """
          self.next_step_handlers[chat_id] = []
  
          if self.next_step_saver is not None:
              self.next_step_saver.start_save_timer()