[MoE] Use int input for histc on CUDA to support deterministic algorithms (#43583)
* [MoE] Use int input for histc on CUDA/XPU to support deterministic algorithms
* Update src/transformers/integrations/moe.py
Co-authored-by: Ilyas Moutawwakil <57442720+IlyasMoutawwakil@users.noreply.github.com>
---------
Co-authored-by: Ilyas Moutawwakil <57442720+IlyasMoutawwakil@users.noreply.github.com>