### What this PR does / why we need it? This reverts commit42bcad7e9b. The commit cause accuracy decrease of qwen3Next, 150 items of gsm8k, 98 -> 91. - vLLM version: v0.18.0 - vLLM main:6a9cceb219Signed-off-by: Your Name <you@example.com> Co-authored-by: Your Name <you@example.com>