[Diffusion] Detect Flux2 custom VAE path from component_paths#19170

mickqian merged 3 commits intosgl-project:mainsgl-project/sglang:mainfrom

ChangyiYang:diffusion-fix-vae-path-component-detectionChangyiYang/sglang-changyi:diffusion-fix-vae-path-component-detectionCopy head branch name to clipboard