### What this PR does / why we need it?
If expert_map is on the device, there may be occasional repeated answers
in long output scenarios.
dsv3.2-exp-w8a8
No garbled characters are displayed in the output.
| dataset | version | metric | mode | vllm-api-stream-chat |
|----- | ----- | ----- | ----- | -----|
| aime2025 | ef2f4f | accuracy | gen | 60.00 |
- vLLM version: v0.16.0
- vLLM main:
15d76f74e2
Signed-off-by: shenchuxiaofugui <1311027364@qq.com>
a76a509fae