[None][autodeploy] fix weight extraction for graph based quantized checkpoints#9109

Fridah-nv merged 2 commits intoNVIDIA:mainNVIDIA/TensorRT-LLM:mainfrom

nv-auto-deploy:user/fridah/fix-quant-graphnv-auto-deploy/TensorRT-LLM:user/fridah/fix-quant-graphCopy head branch name to clipboard