De-hardcodes randomize_human() and fixes some related issues along the way (#68876)

* First draft on this branch. Should work.

* Whoopsie

* Some fixes

* And again

* Final draft, question mark?

* Please enter the commit message for your changes

* Uhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

* please work

* Saving for the week offline

* Final draft

* Final final draft

* Oh and clean this up

* eah

* Okay, final for real.

* I lied.

* Sure thing boss

* clinclin

Co-authored-by: John Willard <53777086+JohnFulpWillard@users.noreply.github.com>

* That's all of em I think

Co-authored-by: John Willard <53777086+JohnFulpWillard@users.noreply.github.com>

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

@@ -381,6 +381,9 @@
 
 	color_source = ORGAN_COLOR_OVERRIDE
 
+/obj/item/organ/external/pod_hair/get_global_feature_list()
+	return GLOB.pod_hair_list
+
 /obj/item/organ/external/pod_hair/can_draw_on_bodypart(mob/living/carbon/human/human)
 	if(!(human.head?.flags_inv & HIDEHAIR) || (human.wear_mask?.flags_inv & HIDEHAIR))
 		return TRUE

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

@@ -77,6 +77,9 @@
 	color_source = ORGAN_COLOR_HAIR
 	wag_flags = WAG_ABLE
 
+/obj/item/organ/external/tail/cat/get_global_feature_list()
+	return GLOB.tails_list_human
+
 /obj/item/organ/external/tail/monkey
 	color_source = NONE
 
@@ -89,6 +92,9 @@
 	///A reference to the paired_spines, since for some fucking reason tail spines are tied to the spines themselves.
 	var/obj/item/organ/external/spines/paired_spines
 
+/obj/item/organ/external/tail/lizard/get_global_feature_list()
+	return GLOB.tails_list_lizard
+
 /obj/item/organ/external/tail/lizard/Insert(mob/living/carbon/reciever, special, drop_if_replaced)
 	. = ..()
 	if(.)