Centralized dummy lookalike generation (#58366)

code/modules/admin/outfit_editor.dm

@@ -37,12 +37,7 @@
 
 /datum/outfit_editor/proc/init_dummy()
 	dummy_key = "outfit_editor_[owner]"
-	var/mob/living/carbon/human/dummy/dummy = generate_or_wait_for_human_dummy(dummy_key)
-	var/mob/living/carbon/carbon_target = owner.mob
-	if(istype(carbon_target))
-		carbon_target.dna.transfer_identity(dummy)
-		dummy.updateappearance()
-
+	generate_dummy_lookalike(dummy_key, owner.mob)
 	unset_busy_human_dummy(dummy_key)
 
 /datum/outfit_editor/ui_interact(mob/user, datum/tgui/ui)
@@ -78,9 +73,9 @@
 	data["outfit"] = serialize_outfit()
 	data["saveable"] = !GLOB.custom_outfits.Find(drip)
 
-	var/datum/preferences/prefs = owner.prefs
+	if(!dummy_key)
+		init_dummy()
 	var/icon/dummysprite = get_flat_human_icon(null,
-		prefs = prefs,
 		dummy_key = dummy_key,
 		showDirs = list(SOUTH),
 		outfit_override = drip)

code/modules/admin/verbs/selectequipment.dm

@@ -23,7 +23,6 @@
 	var/mob/target_mob
 
 	var/dummy_key
-	var/mob/living/carbon/human/dummy/dummy
 
 	//static list to share all the outfit typepaths between all instances of this datum.
 	var/static/list/cached_outfits
@@ -63,12 +62,7 @@
 
 /datum/select_equipment/proc/init_dummy()
 	dummy_key = "selectequipmentUI_[target_mob]"
-	dummy = generate_or_wait_for_human_dummy(dummy_key)
-	var/mob/living/carbon/carbon_target = target_mob
-	if(istype(carbon_target))
-		carbon_target.dna.transfer_identity(dummy)
-		dummy.updateappearance()
-
+	generate_dummy_lookalike(dummy_key, target_mob)
 	unset_busy_human_dummy(dummy_key)
 	return
 
@@ -112,14 +106,16 @@
 
 /datum/select_equipment/ui_data(mob/user)
 	var/list/data = list()
-	if(!dummy)
+	if(!dummy_key)
 		init_dummy()
 
-	var/datum/preferences/prefs = target_mob?.client?.prefs
-	var/icon/dummysprite = get_flat_human_icon(null, prefs=prefs, dummy_key = dummy_key, outfit_override = selected_outfit)
+	var/icon/dummysprite = get_flat_human_icon(null,
+		dummy_key = dummy_key,
+		outfit_override = selected_outfit)
 	data["icon64"] = icon2base64(dummysprite)
 	data["name"] = target_mob
 
+	var/datum/preferences/prefs = user?.client?.prefs
 	data["favorites"] = list()
 	if(prefs)
 		data["favorites"] = prefs.favorite_outfits