supergfxctl plasma widget broken on plasma 6

[bsherman]

Reported in Discord: https://discord.com/channels/1072614816579063828/1087140957096517672/1232824538497155103

There's a few problems here.

1. the obvious, the widget is built for plasma 5 and not plasma 6, so how do we fix this?
2. it's a 3rd party copr package, and this kind of situation is why we don't want a lot of 3rd party coprs. :) thankfully, it's @EyeCantCU 's and we can fix it pretty well ourselves.

I'll look at options. If I can fix this I will, and will move it to our ublue-os/staging copr if that works.

[bsherman]

OK, I don't know how to fix this efficiently, so I'm just going to do some cleanup, and tee it up for you @EyeCantCU