Fix quickdraw hotkeys working while incapacitated (#44953)

The check for incapacitated is normally done in the click proc since
that way it's checked on all of attack_hand, attackby, etc.. The
keybinding uses attack_hand instead of the click proc because it would
go through as a shift click and examine the item instead of grabbing
it if the click proc was used.

code/modules/keybindings/bindings_human.dm

@@ -2,6 +2,8 @@
 	if(client.keys_held["Shift"])
 		switch(_key)
 			if("E") // Put held thing in belt or take out most recent thing from belt
+				if(incapacitated())
+					return
 				var/obj/item/thing = get_active_held_item()
 				var/obj/item/equipped_belt = get_item_by_slot(SLOT_BELT)
 				if(!equipped_belt) // We also let you equip a belt like this
@@ -31,6 +33,8 @@
 				return
 
 			if("B") // Put held thing in backpack or take out most recent thing from backpack
+				if(incapacitated())
+					return
 				var/obj/item/thing = get_active_held_item()
 				var/obj/item/equipped_back = get_item_by_slot(SLOT_BACK)
 				if(!equipped_back) // We also let you equip a backpack like this