[ITensors] [ENHANCEMENT] Use `LinearAlgebra.MulAddMul` in ITensor broadcasting

I noticed that there is a type [`LinearAlgebra.MulAddMul`](https://github.com/JuliaLang/julia/blob/v1.11.1/stdlib/LinearAlgebra/src/generic.jl#L13-L34) that performs the same role as the `ITensors.axpy` type introduced in: https://github.com/ITensor/ITensors.jl/pull/1532 to fix an ITensor broadcasting operation on GPU, we should investigate using that type. (@kmp5VT)