onnxruntime

a0b470bc - [DML EP] Add mixed datatype support for DML's LayerNorm contrib op (#13734)

[DML EP] Add mixed datatype support for DML's LayerNorm contrib op (#13734) ### Description Add mixed datatype support for DML's LayerNorm contrib op. ### Motivation and Context The fusion logic removes casts around LayerNorm in the graph because the contrib version of the op supports mixed datatypes. Scale, Bias and Output's datatypes must match, but input's datatype can be different.