use SIGNAL_HANDLER REEEEEE (#59242)

makes as many procs as i can find use the SIGNAL_HANDLER define which i assumed they all already did

code/modules/projectiles/guns/ballistic.dm

@@ -652,6 +652,7 @@ GLOBAL_LIST_INIT(gun_saw_types, typecacheof(list(
 			. = TRUE
 
 /obj/item/gun/ballistic/proc/instant_reload()
+	SIGNAL_HANDLER
 	if(magazine)
 		magazine.top_off()
 	else

code/modules/projectiles/guns/energy.dm

@@ -276,6 +276,7 @@
 			. = "<span class='danger'>[user] casually lights [A.loc == user ? "[user.p_their()] [A.name]" : A] with [src]. Damn.</span>"
 
 /obj/item/gun/energy/proc/instant_recharge()
+	SIGNAL_HANDLER
 	if(!cell)
 		return
 	cell.charge = cell.maxcharge

code/modules/projectiles/guns/energy/special.dm

@@ -243,6 +243,7 @@
 	select_fire()
 
 /obj/item/gun/energy/wormhole_projector/proc/on_portal_destroy(obj/effect/portal/P)
+	SIGNAL_HANDLER
 	if(P == p_blue)
 		p_blue = null
 	else if(P == p_orange)

code/modules/projectiles/guns/magic.dm

@@ -94,6 +94,7 @@
 			recharge_newshot()
 
 /obj/item/gun/magic/proc/instant_recharge()
+	SIGNAL_HANDLER
 	charges = max_charges
 	recharge_newshot()
 	update_appearance()

code/modules/projectiles/guns/misc/beam_rifle.dm

@@ -232,11 +232,12 @@
 		lastangle = angle
 
 /obj/item/gun/energy/beam_rifle/proc/on_mob_move()
+	SIGNAL_HANDLER
 	check_user()
 	if(aiming)
 		delay_penalty(aiming_time_increase_user_movement)
 		process_aim()
-		aiming_beam(TRUE)
+		INVOKE_ASYNC(src, .proc/aiming_beam, TRUE)
 
 /obj/item/gun/energy/beam_rifle/proc/start_aiming()
 	aiming_time_left = aiming_time

code/modules/projectiles/guns/misc/blastcannon.dm

@@ -134,6 +134,7 @@
  * - [blastwave_data][/list]: A list containing all of the data for the blastwave.
  */
 /obj/item/gun/blastcannon/proc/channel_blastwave(atom/source, list/arguments)
+	SIGNAL_HANDLER
 	. = COMSIG_CANCEL_EXPLOSION
 
 	var/heavy = arguments[EXARG_KEY_DEV_RANGE]
@@ -145,15 +146,15 @@
 		return
 
 	if(!ismob(loc))
-		fire_dropped(heavy, medium, light)
+		INVOKE_ASYNC(src, .proc/fire_dropped, heavy, medium, light)
 		return
 
 	var/mob/holding = loc
 	var/target = cached_target?.resolve()
 	if(target && (holding.get_active_held_item() == src) && cached_firer && (holding == cached_firer.resolve()))
-		fire_intentionally(target, holding, heavy, medium, light, cached_modifiers)
+		INVOKE_ASYNC(src, .proc/fire_intentionally, target, holding, heavy, medium, light, cached_modifiers)
 	else
-		fire_accidentally(holding, heavy, medium, light)
+		INVOKE_ASYNC(src, .proc/fire_accidentally, holding, heavy, medium, light)
 	return
 
 /**

code/modules/projectiles/guns/misc/medbeam.dm

@@ -50,6 +50,7 @@
  * automatic disconnection = beam_died, so we can give a warning message first
  */
 /obj/item/gun/medbeam/proc/beam_died()
+	SIGNAL_HANDLER
 	active = FALSE //skip qdelling the beam again if we're doing this proc, because
 	if(isliving(loc))
 		to_chat(loc, "<span class='warning'>You lose control of the beam!</span>")