IPC Limb Hard Del Fix (#22164)

Another smallish hard del fix, this time for external organs. Turns out
it really is pretty important that Destroy() procs need to close with
return ..() instead of open with . = ..()

I made this after watching an IPC ghostrole leave a round via cryo, and
then triggered 3s worth of hard dels all at once.

<img width="406" height="774" alt="image"
src="https://github.com/user-attachments/assets/096c084e-6953-4eb5-a708-0fa7018890d6"
/>

code/modules/organs/organ_external.dm

@@ -224,8 +224,6 @@
 
 /obj/item/organ/external/Destroy()
 
-	. = ..()
-
 	if(parent?.children)
 		parent.children -= src
 
@@ -262,7 +260,7 @@
 	QDEL_NULL(nymph)
 
 	QDEL_NULL(tendon)
-
+	return ..()
 
 /obj/item/organ/external/proc/invalidate_marking_cache()
 	cached_markings = null