JACK transport is lost/not migrated when moving between driver nodes.
As talked about in #3562 (closed), transport is per node and moving applications between nodes the transport is lost/not migrated. This is a problem when there's a mix of MIDI-only JACK applications and JACK applications with audio as well. Since bafa890a JACK applications are scheduled togeher, and if starting/stopping JACK application with audio ports the MIDI-only JACK applications may be moved to/from Midi-Bridge node.