onnxruntime

db383a94 - [WebGPU EP] Reduce duplicated code in `MatMulReadFnSource()` (#27151)

[WebGPU EP] Reduce duplicated code in `MatMulReadFnSource()` (#27151) ### Description Previously in `MatMulReadFnSource()` we use duplicated code to read data from two inputs `a` and `b`. This patch implements another overload of `MatMulReadFnSource()` to only read data from one input to reduce duplicated code and get ready for further use.