TF: XLA Logits Warpers
# What does this PR do?

This PR enables XLA on the logits warpers... which actually needed no changes. In essence, it adds XLA tests to ensure we don't regress.
_The documentation is not available anymore as the PR was closed or merged._<|||||>@patrickvonplaten Sorry, I know you've already reviewed this, but I'm going to re-request your review. I realized the tests were much easier to understand (and with fewer lines) if they were parametrized, instead of having two tests (one for XLA, another for non-XLA) with shared code 😅 