Add unittests to Comparison Operator Kernels in `BinaryOpsKernel.cpp` (#41809)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/41809
Add new unittests to Operator Kernels.
Explicitly announce function type in tests because it can't be inferred.
Test Plan: CI
Reviewed By: malfet
Differential Revision: D22647221
fbshipit-source-id: ef2f0e8c847841e90aa26d028753f23c8c53d6b0
