BatchNorm: Use resize_output and empty, instead of empty_like (#63084)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/62967
This lets each of the three implementations choose which memory format
to use for the output, meaning channels_last can be used in more cases.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/63084
Reviewed By: saketh-are
Differential Revision: D30255740
Pulled By: ngimel
fbshipit-source-id: 48d42850952ec910b29521a1c4e530eb2b29df5e
