[RL] provide options for whether shutdown comm group after weights cleared (#5663)

* [rl] provide options for whether shutdown comm group after weights cleared

* [fix] fix args hardcode

* [fix] change args type

* [fix] add worker process args

fastdeploy/engine/engine.py

@@ -590,6 +590,7 @@ class LLMEngine:
             "disable_sequence_parallel_moe": self.cfg.parallel_config.disable_sequence_parallel_moe,
             "enable_logprob": self.cfg.model_config.enable_logprob,
             "lm_head_fp32": self.cfg.model_config.lm_head_fp32,
+            "shutdown_comm_group_if_worker_idle": self.cfg.parallel_config.shutdown_comm_group_if_worker_idle,
         }
         for worker_flag, value in worker_store_true_flag.items():
             if value: