Support tensor.__getitem__() in TorchScript compilation (#73952)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/73952
Reviewed By: tugsbayasgalan
Differential Revision: D34743346
Pulled By: gmagogsfm
fbshipit-source-id: 2273c289c2224166cb1eed10a138d4ac7043ed83
(cherry picked from commit 37aefb9a95e0df4586bb623a1aaa974fbe799687)
