[Primtorch] Tried porting leaky_relu into a ref (#78041)
Feels good to delete it from `torch._decomps`. This is mainly to clarify the process for me -
Seems like there's still some components missing of the `torch <-> refs` mapping? For example, seems like methods don't work yet for mapping from torch <-> refs, and neither do the meta tests? (cc: @ezyang).
If I replace the `torch` with `refs`, then the tests seem to pass.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/78041
Approved by: https://github.com/mruberry
