Error printing extension support for multiline errors (#43807)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/43807
Test Plan: Imported from OSS
Reviewed By: gmagogsfm
Differential Revision: D23407457
Pulled By: Lilyjjo
fbshipit-source-id: 05a6a50dc39c00474d9087ef56028a2c183aa53a
