[Bugfix] Fix default diffusion stage config generator drops runtime engine args#2559

Gaohan123 merged 4 commits into

vllm-project:mainvllm-project/vllm-omni:mainfrom

xiaohajiayou:fix/diffusion-default-factory-engine-argsxiaohajiayou/vllm-omni:fix/diffusion-default-factory-engine-argsCopy head branch name to clipboard