`torch.reciprocal`: promote integer inputs to float (#49102)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/49091
Pull Request resolved: https://github.com/pytorch/pytorch/pull/49102
Reviewed By: VitalyFedyunin
Differential Revision: D25639541
Pulled By: soulitzer
fbshipit-source-id: 1dd360bd7b77f106d606143d8d3961610bac8cb7
