Re-enable xla workflow (#93334)
Re-enables xla workflow after addressing https://github.com/pytorch/xla/issues/4535. The pytorch/xla repo is [green](https://app.circleci.com/pipelines/github/pytorch/xla/16130/workflows/aabf6879-b510-47e1-8abb-b3cf8398957a/jobs/38162) again after GitHub resolved the outage.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/93334
Approved by: https://github.com/malfet
