Just going to point my bit in here.
Drones aren't intended to be borgs, they aren't big. they're about like half the size of your head in the form of a spider-ish apperance.
they're intended to merely repair, clean and power the station as much as they could. the only times they could actually build anything would be the aftermath of a 300 water and potassium mix by cargo.
They're also very easy to kill as just swiping a ID card on them shuts them down. (unless emagged.) Or if killswitch them from the engineering / engi-sat satellite.
Drones can't do anything at all to really stop an antag, infact it's more of the opposite. They can easily help antags to their work without even realizing it at times. An example of this would be it deciding to clean out a recent bloodsport and security decided to be unresponsive and not show up. So the prints and all traces are gone other than maybe left behind debris and that's about it.
Or have the Antag simply Emag the drone to have it as it's own tiny killing machine which strikes fear into everyone.
Technically the drone isn't being a direct hidnerance in the light situation, if the sling decides to smash a light and run off far away. which the drone can easily return to replace it. It's a dick move but they can technically do it as long as it abides their lawset. as Theres no one there and it's technically damaged property of the station. Slings also don't have it bad either, literally all they need to do is to simply just use their shutoff ability where the lights go out but don't break. It's more along the shadowlings fault for deciding the smash them giving anyone with a light replacer the time to swap it out and run before they return.
As long as they aren't being direct or even in-direct ways of antagging like mis-clicking or purposely spamming the science lockdown blast doors. If the antag damages the station, they repair the station. they aren't co-ensiding with anyone, they're just simply doing their Job.