Restores ability for borgs to adjust reflector angles (#74913)

## About The Pull Request
Adds an override for `attack_robot()` on reflectors, which is called
when a borg clicks on an object with no tool selected. Only allows
rotating if the borg is adjacent to the reflector.
## Why It's Good For The Game
This was an undocumented change of #74800, and I assume unintended. In
any case, the inability to adjust reflectors somewhat restricts engineer
borgs' ability to engineer.
## Changelog
🆑
fix: Restores ability for borgs to adjust reflector angles. This is now
a left-click with nothing selected, similar to humans' left-click with
an empty hand.
/🆑

code/game/objects/structures/reflector.dm

@@ -297,6 +297,13 @@
 		ui = new(user, src, "Reflector")
 		ui.open()
 
+/obj/structure/reflector/attack_robot(mob/user)
+	ui_interact(user)
+	return
+
+/obj/structure/reflector/ui_state(mob/user)
+	return GLOB.physical_state //Prevents borgs from adjusting this at range
+
 /obj/structure/reflector/ui_data(mob/user)
 	var/list/data = list()
 	data["rotation_angle"] = rotation_angle