[te] Add a 2D convolution example test (#45514)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/45514
Test Plan: Imported from OSS
Reviewed By: SplitInfinity
Differential Revision: D24142405
Pulled By: bertmaher
fbshipit-source-id: 8f064d0638b48f55a732c08938b9fcf1ba3f0415
