Prefer maybe_multiply when multiplying by a constant (#68185)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/68185
As per title
We also fix the first input to `handle_r_to_c` fo `rsub`as it was
flipped for the two inputs.
Test Plan: Imported from OSS
Reviewed By: ngimel
Differential Revision: D32684855
Pulled By: mruberry
fbshipit-source-id: ffeab8d561e657105b314a883260f00d0ae59bbf
