[Bugfix][Misc] Fix silu_and_mul_nvfp4_quant issue and extract common utils for nvfp4 kernel source files#23727

simon-mo merged 10 commits intovllm-project:mainvllm-project/vllm:mainfrom

elvischenv:elvischenv/nvfp4-utilselvischenv/vllm:elvischenv/nvfp4-utilsCopy head branch name to clipboard