[TensorExpr] Fix min and max for integral inputs in CUDA backend (#44984)
Summary:
For integral types, isnan is meaningless. Provide specializations for
maximum and minimum which don't call it.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/44984
Test Plan: python test/test_jit_fuser_te.py -k TestTEFuser.test_minmax_int_ops
Reviewed By: ezyang
Differential Revision: D23885259
Pulled By: asuhan
fbshipit-source-id: 2e6da2c43c0ed18f0b648a2383d510894c574437
