protect destructors of python bindings that can be kept alive by c++ objects (#57488)
Summary:
Such a deadlock was found for PyFunctionPreHook after adding https://github.com/pytorch/pytorch/pull/57057
This is fixing all occurrences in torch/csrc/autograd
Pull Request resolved: https://github.com/pytorch/pytorch/pull/57488
Reviewed By: malfet
Differential Revision: D28163321
Pulled By: albanD
fbshipit-source-id: 4daf1db69674e73967fc7c5ca2a240c61340e7ca
