[WebGPU] Correct MatMul bias input indexing in MatMul::ComputeInternal#28475

guschmue merged 2 commits into

mainmicrosoft/onnxruntime:mainfrom

copilot/fix-bias-setting-matmul-webgpumicrosoft/onnxruntime:copilot/fix-bias-setting-matmul-webgpuCopy head branch name to clipboard