.github: Re-enable xla test config (#71008)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/71008
This reverts commit 6f83841582d8d818129dc4ce82a8478f221b32d7.
Test Plan: Imported from OSS
Reviewed By: janeyx99
Differential Revision: D33480077
Pulled By: seemethere
fbshipit-source-id: a2e720c55d0e1995e2b6cf2da7c801f377d52b3f
