Include device.product.name for ports to fix HDMI output names

Please see issue on the non-qt version https://gitlab.freedesktop.org/pulseaudio/pavucontrol/-/issues/139

And my PR that implements it https://gitlab.freedesktop.org/pulseaudio/pavucontrol/-/merge_requests/102

I suppose this won't be hard to implement in the Qt version now that the bulk of the work is done, but I am too lazy to do the second project too.