[jit] shape propagation for prepack (#63585)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/63585
Test Plan: Imported from OSS
Reviewed By: malfet
Differential Revision: D30428905
Pulled By: IvanKobzarev
fbshipit-source-id: c18f6605a69b2e000bdf14a23e637c5a1c2ec64c
