fix launch unorder (#55011)

python/paddle/distributed/launch/context/args_envs.py

@@ -222,4 +222,9 @@ def parse_args():
         help="seconds to wait before elastic job begin to train",
     )
 
-    return parser.parse_known_args()
+    args = parser.parse_known_args()
+    env_rank = int(os.getenv('PADDLE_TRAINER_ID', -1))
+    if env_rank >= 0:
+        assert hasattr(args[0], "rank")
+        args[0].rank = env_rank
+    return args