Add debug only layout assert for empty_cpu (#53396)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/53396
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
Test Plan: Imported from OSS
Reviewed By: bdhirsh
Differential Revision: D26891806
Pulled By: ezyang
fbshipit-source-id: 4789ab5587d1a11d50e9a60bbfa1c21c1222823e
