SubprocessCluster and SSHCluster hang indefinitely when using the new-style logging configuration

[hendrikmakait]

When using the new-style logging configuration, both the SSHCluster and the SubprocessCluster hang indefinitely because they rely on a stream handler registered to distributed on INFO level to write the scheduler address to stderr.

This can be reproduced by using new-style logging configuration in your Dask configuration file, e.g. your config may look like

distributed:
  version: 2
  logging:
    version: 1

and starting a cluster.

With the old-style logging configuration this works as expected due to #8391.