fix arguement error (PaddlePaddle#3030)

Author: Wanglongzhi2001

fastdeploy/model_executor/layers/moe/fused_moe_backend_base.py

@@ -85,8 +85,8 @@ def init_ep(self, layer: nn.Layer) -> None:
                         layer.top_k,
                         layer.hidden_size,
                         layer.num_experts,
-                        layer.moe_config.num_max_dispatch_tokens_per_rank,
                         layer.fd_config.parallel_config.splitwise_role,
+                        layer.fd_config.model_config.num_max_dispatch_tokens_per_rank,
                         layer.ep_size,
                         layer.ep_rank,
                         layer.fd_config.model_config.redundant_experts_num,