pytorch

c1950620 - [decomp] Fix native_batch_norm_backward dtype of dweight and dbias (#89740)

[decomp] Fix native_batch_norm_backward dtype of dweight and dbias (#89740) Discovered while debugging an accuracy issue for Inductor. Pull Request resolved: https://github.com/pytorch/pytorch/pull/89740 Approved by: https://github.com/soumith, https://github.com/ngimel