`dask/tests/test_distributed.py::test_to_hdf_scheduler_distributed` flaky

[lukeconibear]

What happened: The tests within dask/tests/test_distributed.py::test_to_hdf_scheduler_distributed sometimes fail in GitHub Actions, for example here and here.

What you expected to happen: The tests to pass every time. They pass locally and in most CI runs.

Environment:

• Dask version: 2022.9.0
• Python version: 3.9
• Operating System: macOS
• Install method (conda, pip, source): conda

[jrbourbeau]

Thanks for reporting @lukeconibear