pytorch

b07d68e2 - [reland] Always use intrusive_ptr for Message (2 out of 2) (#59206)

[reland] Always use intrusive_ptr for Message (2 out of 2) (#59206) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/59206 Reland of https://github.com/pytorch/pytorch/pull/58423 This is part 2 of the previous PR. Here we address the remaining occurrences of "raw" Message, namely the ones within toMessageImpl. And since they're the last ones, we make the constructor of Message private, to prevent new usages from emerging. ghstack-source-id: 130202848 Test Plan: CI Reviewed By: mrshenli Differential Revision: D28623892 fbshipit-source-id: f815cf6b93e488c118e5d2298473e6e9d9f4c132