Added type annotations to unpooling layers (#24101)
Summary:
Currently, `output_size` gets inferred as a `Tensor` type, which isn't correct.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/24101
Differential Revision: D16742162
Pulled By: Chillee
fbshipit-source-id: 61ba030773dac2830c75974060bd316c35607126
