Fixed cat transform to work with event_dim > 0 (#49111)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/44530
As explained in the issue description, CatTransform does not work with event_dim > 0.
This PR fixes this. If this gets approved I am hoping to do the same for StackTransform as well.
fritzo Can you take a look at this ?
Pull Request resolved: https://github.com/pytorch/pytorch/pull/49111
Reviewed By: neerajprad
Differential Revision: D25526005
Pulled By: ezyang
fbshipit-source-id: e14430093f550d5e0da7a311f9cd44796807830f
