Misc lighting fixes (#21600)

- Fixes hull beacons, radial lights and decal light sources not emitting
light. Thunderdome is no longer dark, fixes #21565
and fixes #21567

- Fixes radial lights not drawing any power from the powernet it's
connected to. Also refactors its toggle logic, since it never stopped
processing despite `STOP_PROCESSING` macro

code/game/objects/effects/decals/misc.dm

@@ -51,8 +51,8 @@
 
 /obj/effect/decal/fake_object/light_source/Initialize()
 	.=..()
-	set_light(light_power, light_range, light_color)
+	set_light(light_range, light_power, light_color)
 
 /obj/effect/decal/fake_object/light_source/invisible
-	simulated = 0
-	invisibility = 101
+	simulated = FALSE
+	invisibility = INVISIBILITY_ABSTRACT

code/game/objects/items/devices/lighting/hull_beacon.dm

@@ -3,6 +3,12 @@
 	desc = "A light-emitting hull beacon."
 	icon = 'icons/obj/lighting.dmi'
 	anchored = TRUE
+	light_system = MOVABLE_LIGHT
+	light_range = 3
+
+/obj/item/hullbeacon/Initialize()
+	. = ..()
+	set_light_on(TRUE)
 
 /obj/item/hullbeacon/attack_hand(mob/user)
 	return
@@ -12,11 +18,9 @@
 	desc = "A red, light-emitting hull beacon."
 	icon_state = "beacon_red_on"
 	light_color = LIGHT_COLOR_RED
-	light_range = 3
 
 /obj/item/hullbeacon/green
 	name = "green hull beacon"
 	desc = "A green, light-emitting hull beacon."
 	icon_state = "beacon_green_on"
 	light_color = LIGHT_COLOR_GREEN
-	light_range = 3