I've noticed lots of CI runs hanging on test_old_ssh_nprocs_renamed_to_n_workers when running Windows tests

• https://github.com/dask/distributed/actions/runs/17854350762/job/50769871350?pr=9109
• https://github.com/dask/distributed/actions/runs/17854350762/job/50769871352?pr=9109
• https://github.com/dask/distributed/actions/runs/17854350762/job/50769871375?pr=9109