### What this PR does / why we need it? Replace `apply_grammar_bitmask()` method with that in vllm to avoid maintenance. - vLLM version: v0.11.0rc3 - vLLM main: https://github.com/vllm-project/vllm/commit/v0.11.0 Signed-off-by: shen-shanshan <467638484@qq.com>