[ONNX] Update fuseLogSoftmaxNllLoss function to handle autocasting (#51729) (#52349)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/52349
Adds a check for patterns for cases with autocasting enabled in which a cast node is inserted before the NegativeLogLikelihoodLoss
node and causing these patterns below not to be recognizable by peephole pass function
Test Plan: Imported from OSS
Reviewed By: malfet
Differential Revision: D26490326
Pulled By: SplitInfinity
fbshipit-source-id: 4a6d806acc51b4696fd3932734d55af075fba6b1
