Support record_stream in dispatch mode (#99529)
Summary:
Issuing a `t.record_stream(s)` call while a `TorchDispatchMode` is active was throwing because PyTorch was unable to convert a c10::Stream back to a Python object. It's now fixed.
Fixes https://github.com/pytorch/pytorch/issues/94403
Test Plan: Added a unit test
Differential Revision: D45117566
Pull Request resolved: https://github.com/pytorch/pytorch/pull/99529
Approved by: https://github.com/albanD
