Like WirePlumber 0.4.17, we need to mark the current routes as 'active' if they
were previously not active as soon as we detect it. This avoids a possible
infinite loop that restores the routes and saves them constantly, which happens
when the device's Route param has changed more than once before the event
'select-routes' is triggered.
Use the directory name and file name to construct the hook's name,
like a path. This way, when you see a hook name, it is clear where
to find that hook in the source code.
