Use global variables to register the return_types namedtuples (#108832)
Fixes #69221. Builds on top of #107000, fixing the buck build issue linked [here](https://github.com/pytorch/pytorch/pull/107000#issuecomment-1708857375).
Pull Request resolved: https://github.com/pytorch/pytorch/pull/108832
Approved by: https://github.com/zou3519
