Above light layer conversion (#8733)

code/game/objects/effects/overlays.dm

@@ -7,13 +7,13 @@
 /obj/effect/overlay/Destroy()
 	i_attached = null
 	return ..()
-	
+
 /obj/effect/overlay/beam//Not actually a projectile, just an effect.
 	name="beam"
 	icon='icons/effects/beam.dmi'
 	icon_state="b_beam"
 	blend_mode = BLEND_ADD
-	layer = LIGHTING_LAYER + 0.1
+	layer = EFFECTS_ABOVE_LIGHTING_LAYER
 	animate_movement = FALSE
 	var/tmp/atom/BeamSource
 

code/game/objects/items/skrell.dm

@@ -49,7 +49,7 @@
 	icon_state = "starprojection"
 	mouse_opacity = TRUE
 	duration = 30 SECONDS
-	layer = LIGHTING_LAYER + 0.1
+	layer = EFFECTS_ABOVE_LIGHTING_LAYER
 	light_power = 1
 	light_range = 1
 	light_color = LIGHT_COLOR_HALOGEN