[MIRROR] Refactors do_after w/ TG's do_after (#11486)

Co-authored-by: Cameron Lennox <killer65311@gmail.com>

code/game/objects/items.dm

@@ -176,7 +176,7 @@
 		CRASH("item add_item_action got a type or instance of something that wasn't an action.")
 
 	LAZYADD(actions, action)
-	RegisterSignal(action, COMSIG_PARENT_QDELETING, PROC_REF(on_action_deleted))
+	RegisterSignal(action, COMSIG_QDELETING, PROC_REF(on_action_deleted))
 	if(ismob(loc))
 		// We're being held or are equipped by someone while adding an action?
 		// Then they should also probably be granted the action, given it's in a correct slot
@@ -190,7 +190,7 @@
 	if(!action)
 		return
 
-	UnregisterSignal(action, COMSIG_PARENT_QDELETING)
+	UnregisterSignal(action, COMSIG_QDELETING)
 	LAZYREMOVE(actions, action)
 	qdel(action)