Fixes lowered megamothwings not rendering (#60856)

code/modules/surgery/bodyparts/_bodyparts.dm

@@ -819,7 +819,7 @@
 	add_overlay(standing)
 
 //Gives you a proper icon appearance for the dismembered limb
-/obj/item/bodypart/proc/get_limb_icon(dropped)
+/obj/item/bodypart/proc/get_limb_icon(dropped, draw_external_organs)
 	icon_state = "" //to erase the default sprite, we're building the visual aspects of the bodypart through overlays alone.
 
 	. = list()
@@ -921,6 +921,9 @@
 			aux_em_block.color = GLOB.em_block_color
 			aux.overlays += aux_em_block
 
+	if(!draw_external_organs)
+		return
+
 	//Draw external organs like horns and frills
 	for(var/obj/item/organ/external/external_organ in external_organs)
 		if(!dropped && !external_organ.can_draw_on_bodypart(owner))

code/modules/surgery/bodyparts/head.dm

@@ -205,7 +205,7 @@
 		img.pixel_y = px_y
 	add_overlay(standing)
 
-/obj/item/bodypart/head/get_limb_icon(dropped)
+/obj/item/bodypart/head/get_limb_icon(dropped, draw_external_organs)
 	cut_overlays()
 	. = ..()
 	if(dropped) //certain overlays only appear when the limb is being detached from its owner.

code/modules/surgery/organs/external/_external_organs.dm

@@ -72,8 +72,7 @@
 /obj/item/organ/external/proc/get_overlays(list/overlay_list, image_dir, image_layer, body_type, image_color)
 	if(!sprite_datum)
 		return
-	if(owner && HAS_TRAIT(owner, TRAIT_INVISIBLE_MAN))
-		return
+
 	var/gender = (body_type == FEMALE) ? "f" : "m"
 	var/finished_icon_state = (sprite_datum.gender_specific ? gender : "m") + "_" + preference + "_" + sprite_datum.icon_state + mutant_bodyparts_layertext(image_layer)
 	var/mutable_appearance/appearance = mutable_appearance(sprite_datum.icon, finished_icon_state, layer = -image_layer)