[Hackathon] Add source highlighting check to test_unsupported_ops (#55501)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/55501
Reviewed By: janeyx99
Differential Revision: D27627517
Pulled By: gmagogsfm
fbshipit-source-id: 2542473425d10f1e3eb926f9e0fb6cd40679bd82
