Comment 17 for bug 1877194

Still a problem on jammy, and removing switch-on-connect does fix things there.

The result of that change is that plugging in a new (never seen before) USB device does *not* automatically switch to it, but once the device has been selected as the output, it will subsequently be automatically selected when plugged in (or at least that's my experience on my PC).

And it also clears up the "always selects headphones output" issue on the Pi. I'll target this to jammy given we're still getting duplicate reports about it (LP: #1995459 is the latest)