Make onnx export SDPA match aten behavior#2479

titaiwangms merged 1 commit intomicrosoft:mainmicrosoft/onnxscript:mainfrom

IlyasMoutawwakil:match-aten-sdpa-with-maskIlyasMoutawwakil/onnxscript:match-aten-sdpa-with-maskCopy head branch name to clipboard