Support using self as the destination in rpc.remote for builtin operators (#34931)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/34931
Test Plan: Imported from OSS
Differential Revision: D20503571
Pulled By: mrshenli
fbshipit-source-id: ed1454a349798b18b9953bbf13c86bc43d3b559d
