pytorch

168bad5f - [export] Reland "Fix graph signature data model to list of specs." (#111136)

[export] Reland "Fix graph signature data model to list of specs." (#111136) Summary: reland D49876258 Test Plan: CI Differential Revision: D50224384 Pull Request resolved: https://github.com/pytorch/pytorch/pull/111136 Approved by: https://github.com/angelayi