text: Title: Improve the stability of results from end-to-end tests of Datalab with label error-detection for regression tasks
  Body: When running Datalab for regression, the detected issues vary greatly across Python/OS versions in CI, making assertions about the issue masks difficult and slows development down.
  
  We need to figure out how to guarantee more stable results across the platforms/python versions.
  
  _Originally posted by @elisno in https://github.com/cleanlab/cleanlab/pull/902#discussion_r1418324737_
              