Allow FractionalMaxPool 2D and 3D layers to accept 0 dim batch size tensors. (#62083)
Summary:
This issue fixes a part of https://github.com/pytorch/pytorch/issues/12013, which is summarized concretely in https://github.com/pytorch/pytorch/issues/38115.
Allow `FractionalMaxPool` 2D and 3D layers to accept 0 dim batch sizes. Also make some minor corrections to error messages to make them more informative.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/62083
Reviewed By: H-Huang
Differential Revision: D30134461
Pulled By: jbschlosser
fbshipit-source-id: 0ec50875d36c2083a7f06d9ca6a110fb3ec4f2e2
