Fixes invisible signs on mining shelters (#27073)

code/game/objects/structures/signs.dm

@@ -3,7 +3,7 @@
 	anchored = TRUE
 	opacity = FALSE
 	density = FALSE
-	layer = 3.5
+	layer = NOT_HIGH_OBJ_LAYER
 	max_integrity = 100
 	armor = list(MELEE = 50, BULLET = 0, LASER = 0, ENERGY = 0, BOMB = 0, RAD = 0, FIRE = 50, ACID = 50)
 	flags_2 = RAD_PROTECT_CONTENTS_2 | RAD_NO_CONTAMINATE_2

code/modules/mining/equipment/survival_pod.dm

@@ -327,13 +327,12 @@ MAPPING_DIRECTIONAL_HELPERS(/obj/machinery/economy/vending/wallmed/survival_pod,
 /obj/structure/sign/mining
 	name = "nanotrasen mining corps sign"
 	desc = "A sign of relief for weary miners, and a warning for would-be competitors to Nanotrasen's mining claims."
-	icon = 'icons/turf/walls/survival_pod_walls.dmi'
 	icon_state = "ntpod"
+	layer = TABLE_LAYER // scuffed but it works
 
 /obj/structure/sign/mining/survival
 	name = "shelter sign"
 	desc = "A high visibility sign designating a safe shelter."
-	icon = 'icons/turf/walls/survival_pod_walls.dmi'
 	icon_state = "survival"
 
 //Fluff