Fix `ScriptModule.__dir__()` (#22426)
Summary:
`_method_names` is on `_c`, so `dir(script_module)` calls previously
didn't work
Pull Request resolved: https://github.com/pytorch/pytorch/pull/22426
Differential Revision: D16085330
Pulled By: driazati
fbshipit-source-id: 6f9f1bef5da4306c0f26aa0be1bcec6dd3a6f0fb
