### What this PR does / why we need it?
Resolve the issue of waiting queue accumulation when requests are
canceled.
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
By ci
- vLLM version: v0.10.1.1
- vLLM main:
006477e60b
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Signed-off-by: wangxiaoteng666 <wangxiaoteng@huawei.com>