[Buildkite] Cleanup test wheel environment (#17912)
[Buildkite] Cleanup test wheel environment (#17912)

The macOS builders are shared and reused across commits.
@clarkzinzow found a bug that the installed version of the wheel
is not the on in PR. This should fix it.

https://buildkite.com/ray-project/ray-builders-pr/builds/11628#be6c5fd6-14a2-449c-8f35-e3382a6ee647
ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray,ray-project/ray