[numpy] `torch.a{cosh, sinh}` : promote integer inputs to float (#47152)
Summary:
Reference https://github.com/pytorch/pytorch/issues/42515
Pull Request resolved: https://github.com/pytorch/pytorch/pull/47152
Reviewed By: mrshenli
Differential Revision: D24681083
Pulled By: mruberry
fbshipit-source-id: 246e2272536cf912a2575bfaaa831c3eceec034c