Alias _size_N_t to BroadcastingListN[int] (#48297)
Summary:
Because they are one and the same
Fixes https://github.com/pytorch/pytorch/issues/47528
Pull Request resolved: https://github.com/pytorch/pytorch/pull/48297
Reviewed By: eellison
Differential Revision: D25116203
Pulled By: malfet
fbshipit-source-id: 7edc2c89daa3f3302822b1f9b83b41b04658c6b7
