[JIT] Fix GetAttr inconsistency (#37424)
Summary:
We were previously only looking at class attributes, so that didn't include methods etc, and would silently give wrong semantics. This makes hasAttr go through the same resolution as our other attribute lookups.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/37424
Differential Revision: D21282633
Pulled By: eellison
fbshipit-source-id: 8e970f365c2740d137a02331739c2ed93747b918
