Add bound method tests for async_execution with RRef helper (#44716)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/44716
Test Plan: Imported from OSS
Reviewed By: rohan-varma
Differential Revision: D23707326
Pulled By: mrshenli
fbshipit-source-id: a2f8db17447e9f82c9f6ed941ff1f8cb9090ad74
