[jit] Updated the concat common inputs elimination pass to use the variadic cat op instead of aten::cat (#60908)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/60908
Test Plan: Imported from OSS
Reviewed By: eellison
Differential Revision: D29441865
Pulled By: navahgar
fbshipit-source-id: 2ab08168102eff1f43667ca418bdd94bb2df562a
