PortGroupList::gather() first adds UserBundle ports to
`system->add_bundle (*i, allow_dups);`
That can include ports that are already associated with the
current bundle. The port in this case has the Bundle's name.
Those ports are later removed in BundleEditorMatrix::setup_ports
`_ports[OTHER].remove_bundle (_bundle);`
However we do need to show physical ports by their name, even
if they're identical to the already associated bundle to allow
disassociating them.
355528781d