You can put defib paddles back into defibs using hotkeys (#94375)

Co-authored-by: Fghj240 <fakeemail@notrealemail.com>

code/__DEFINES/dcs/signals/signals_mob/signals_mob_carbon.dm

@@ -187,3 +187,8 @@
 /// From /mob/living/carbon/proc/can_defib() : ()
 /// Return a defib result flag to override default defib brain check
 #define COMSIG_CARBON_DEFIB_BRAIN_CHECK "carbon_defib_brain_check"
+
+/// From /mob/living/carbon/human/proc/smart_equip_targeted(): (mob/living/carbon/human/user, obj/item/possible_container)
+#define COMSIG_HUMAN_NON_STORAGE_HOTKEY "human_storage_hotkey"
+	/// Return to prevent the storage fail message
+	#define COMPONENT_STORAGE_HOTKEY_HANDLED (1<<0)

code/game/objects/items/defib.dm

@@ -340,6 +340,7 @@
 	. = ..()
 	AddElement(/datum/element/update_icon_updates_onmob, ITEM_SLOT_BACK)
 	AddComponent(/datum/component/two_handed, force_unwielded=8, force_wielded=12)
+	RegisterSignal(src, COMSIG_HUMAN_NON_STORAGE_HOTKEY, PROC_REF(on_non_storage_hotkey))
 
 /obj/item/shockpaddles/Destroy()
 	defib = null
@@ -668,6 +669,13 @@
 /obj/item/shockpaddles/proc/is_wielded()
 	return HAS_TRAIT(src, TRAIT_WIELDED)
 
+/obj/item/shockpaddles/proc/on_non_storage_hotkey(datum/source,  mob/living/carbon/human/user, obj/item/possible_storage)
+	SIGNAL_HANDLER
+	if(possible_storage == defib)
+		user.dropItemToGround(src)
+		return COMPONENT_STORAGE_HOTKEY_HANDLED
+	return NONE
+
 /obj/item/shockpaddles/cyborg
 	name = "cyborg defibrillator paddles"
 	icon = 'icons/obj/medical/defib.dmi'

code/modules/mob/living/carbon/human/inventory.dm

@@ -358,6 +358,9 @@
 		return
 	var/obj/item/thing = get_active_held_item()
 	var/obj/item/equipped_item = get_item_by_slot(slot_type)
+	var/thing_reject = NONE
+	if(thing)
+		thing_reject = SEND_SIGNAL(thing, COMSIG_HUMAN_NON_STORAGE_HOTKEY, src, equipped_item)
 	if(!equipped_item) // We also let you equip an item like this
 		if(!thing)
 			to_chat(src, span_warning("You have no [slot_item_name] to take something out of!"))
@@ -370,6 +373,8 @@
 		if(!thing)
 			equipped_item.attack_hand(src)
 		else
+			if(thing_reject & COMPONENT_STORAGE_HOTKEY_HANDLED)
+				return
 			to_chat(src, span_warning("You can't fit [thing] into your [equipped_item.name]!"))
 		return
 	if(!storage.supports_smart_equip)