Signal Handler Preperation (#17681)

* FIrst pass

* signal handler only on base proc

* missing signal_handlers

* windoor to timers

* Testing a really dumb fix

code/game/objects/items/devices/radio/intercom.dm

@@ -20,7 +20,11 @@
 	. = ..()
 	var/area/A = get_area(src)
 	if(A)
-		RegisterSignal(A, COMSIG_OBSERVER_APC, /atom/proc/update_icon)
+		RegisterSignal(A, COMSIG_OBSERVER_APC, PROC_REF(on_observer_apc))
+	update_icon()
+
+/obj/item/radio/intercom/proc/on_observer_apc()
+	SIGNAL_HANDLER
 	update_icon()
 
 /obj/item/radio/intercom/Destroy()

code/game/objects/items/devices/transfer_valve.dm

@@ -57,7 +57,6 @@
 
 
 /obj/item/transfer_valve/HasProximity(turf/T, datum/weakref/WF, old_loc)
-	SIGNAL_HANDLER
 	if(isnull(WF))
 		return
 	var/atom/movable/AM = WF.resolve()

code/game/objects/items/weapons/storage/bags.dm

@@ -215,6 +215,7 @@
 	UnregisterSignal(user, COMSIG_OBSERVER_MOVED)
 
 /obj/item/storage/bag/ore/proc/autoload(mob/user)
+	SIGNAL_HANDLER
 	var/obj/item/ore/O = locate() in get_turf(src)
 	if(O)
 		gather_all(get_turf(src), user)

code/game/objects/items/weapons/tanks/tanks.dm

@@ -658,7 +658,6 @@ var/list/global/tank_gauge_cache = list()
 		tank.cut_overlay("bomb_assembly")
 
 /obj/item/tankassemblyproxy/HasProximity(turf/T, datum/weakref/WF, old_loc)
-	SIGNAL_HANDLER
 	if(isnull(WF))
 		return
 	var/atom/movable/AM = WF.resolve()