### What this PR does / why we need it? When running the Qwen3-0.6B model using the npugraph_ex backend, the last few characters of the generated results changed. We have modified the relevant test cases to ensure the CI runs smoothly. ### Does this PR introduce _any_ user-facing change? ### How was this patch tested? - vLLM version: v0.15.0 - vLLM main: https://github.com/vllm-project/vllm/commit/v0.15.0 --------- Signed-off-by: chencangtao <chencangtao@huawei.com> Co-authored-by: chencangtao <chencangtao@huawei.com>