[resubmit] try to infer rref type from python (#33992)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/33992
resubmit of https://github.com/pytorch/pytorch/pull/33369 with tweaks on when the rref type being created to ensure ivalue->type() hold the correct RRef type inside of inner element type.
Test Plan: Imported from OSS
Differential Revision: D20175043
Pulled By: wanchaol
fbshipit-source-id: a08b178e989c995632374e6c868d23c5a85526ae
