Turn on gradgrad check for BCELoss Criterion Tests. (#44894)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/44894
Looks like we added double backwards support but only turned on the ModuleTests.
Test Plan: Imported from OSS
Reviewed By: albanD
Differential Revision: D23762544
Pulled By: gchanan
fbshipit-source-id: b5cef579608dd71f3de245c4ba92e49216ce8a5e
