Boxing logic forwards arguments to stack (#53624)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/53624
Previously, the boxing logic didn't correctly forward arguments to the stack but called copy constructors.
This PR fixes that.
ghstack-source-id: 125886983
(Note: this ignores all push blocking failures!)
Test Plan: waitforsandcastle
Reviewed By: bhosmer
Differential Revision: D26852856
fbshipit-source-id: d2463eeca2f3fce1bbe117611be200fda59c880b
