[Bug]: assert coord_socket is not None

[hustmf]

Your current environment

vllm ascend版本 dedace4
vllm 版本 b6553be1bc75f046b00046a4ad7576364d03c835 v0.9.1
单机A3运行DeepSeek671B减层推理脚本，在推理结束时报错，设置为dp 8,tp 2, 使能ep和图模式
推理为1K推3K，GBS=128，n=16

🐛 Describe the bug

[Yikun]

@hustmf Please also paste the reproduce script.

[MengqingCao]

This is fixed by vllm-project/vllm#19937. please update vllm to the latest main and try again