ethereal disco ball altclick sanity (#81268)

## About The Pull Request

im getting tired of writing this but you may no longer altclick to
unanchor or anchor when crit or at range or otherwise

## Why It's Good For The Game

bug bad

## Changelog
🆑
fix: you may no longer altclick ethereal disco balls while unconscious
to anchor/unanchor
/🆑

code/game/objects/items/etherealdiscoball.dm

@@ -31,6 +31,9 @@
 
 /obj/structure/etherealball/attack_hand(mob/living/carbon/human/user, list/modifiers)
 	. = ..()
+	if(!can_interact(user))
+		return
+
 	if(TurnedOn)
 		TurnOff()
 		to_chat(user, span_notice("You turn the disco ball off!"))