Fix: sync prepare_fp8_layer_for_marlin with latest vllm changes#7648

zhyncs merged 1 commit intosgl-project:mainsgl-project/sglang:mainfrom

narutolhy:fix-vllm-fp8-layer-fo-marlinnarutolhy/sglang:fix-vllm-fp8-layer-fo-marlinCopy head branch name to clipboard