[ONNX] Fix reciprocal when input is not floating point (#67471) (#67808)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/67808
torch.reciprocal implicitly casts the inputs to float, and ONNX
Reciprocal requires floating point inputs.
Also separate the reciprocal test from other tests, and test different
input types.
Test Plan: Imported from OSS
Reviewed By: msaroufim
Differential Revision: D32181307
Pulled By: malfet
fbshipit-source-id: 3e1109b3c85a49c51dc713656a900b4ee78c8340
