Wisdom Cows contain unusual milk (#82269)

## About The Pull Request

Wisdom Cows can now be milked for a random reagent (excepting the
randomly generated reagent blacklist).
Also I changed it to say `you milk the cow` instead of `you milk the
udder` because the latter is stupid.

## Why It's Good For The Game

My experience is that people totally ignore this event when it occurs,
which is _fine_ when we have so many events and they don't all need to
be high impact but I think someone discovering that you can milk the cow
for cognac or meth or something could add something to a round.
I want people to bicker over ownership of the cow, basically.

If the reagent is annoying you can simply speak to the cow to receive
its wisdom and it will disappear.

## Changelog

🆑
add: Wise cows produce surprising milk.
spellcheck: You now milk the owner of an udder, not the udder.
/🆑

code/modules/mob/living/basic/farm_animals/cow/_cow.dm

@@ -33,6 +33,8 @@
 	var/tame_message = "lets out a happy moo"
 	/// singular version for player cows
 	var/self_tame_message = "let out a happy moo"
+	/// What kind of juice do we produce?
+	var/milked_reagent = /datum/reagent/consumable/milk
 
 /mob/living/basic/cow/Initialize(mapload)
 	AddComponent(/datum/component/tippable, \
@@ -42,14 +44,14 @@
 		post_tipped_callback = CALLBACK(src, PROC_REF(after_cow_tipped)))
 	AddElement(/datum/element/pet_bonus, "moos happily!")
 	AddElement(/datum/element/swabable, CELL_LINE_TABLE_COW, CELL_VIRUS_TABLE_GENERIC_MOB, 1, 5)
-	udder_component()
+	setup_udder()
 	setup_eating()
 	. = ..()
 	ai_controller.set_blackboard_key(BB_BASIC_FOODS, typecacheof(food_types))
 
 ///wrapper for the udder component addition so you can have uniquely uddered cow subtypes
-/mob/living/basic/cow/proc/udder_component()
-	AddComponent(/datum/component/udder)
+/mob/living/basic/cow/proc/setup_udder()
+	AddComponent(/datum/component/udder, reagent_produced_override = milked_reagent)
 
 /*
  * food related components and elements are set up here for a few reasons:

code/modules/mob/living/basic/farm_animals/cow/cow_moonicorn.dm

@@ -21,15 +21,13 @@
 	food_types = list(/obj/item/food/grown/galaxythistle)
 	tame_message = "nods with respect"
 	self_tame_message = "nod with respect"
+	milked_reagent = /datum/reagent/drug/mushroomhallucinogen
 
 /mob/living/basic/cow/moonicorn/Initialize(mapload)
 	. = ..()
 	AddElement(/datum/element/venomous, /datum/reagent/pax, 5, injection_flags = INJECT_CHECK_PENETRATE_THICK | INJECT_CHECK_IGNORE_SPECIES)
 	AddElement(/datum/element/movement_turf_changer, /turf/open/floor/grass/fairy)
 
-/mob/living/basic/cow/moonicorn/udder_component()
-	AddComponent(/datum/component/udder, /obj/item/udder, null, null, /datum/reagent/drug/mushroomhallucinogen)
-
 /mob/living/basic/cow/moonicorn/setup_eating()
 	var/static/list/food_types
 	if(!food_types)

code/modules/mob/living/basic/farm_animals/cow/cow_wisdom.dm

@@ -9,7 +9,8 @@
 	///How much experience this cow will grant.
 	var/granted_experience
 
-/mob/living/basic/cow/wisdom/Initialize(mapload, granted_wisdom, granted_experience = 500)
+/mob/living/basic/cow/wisdom/Initialize(mapload, granted_wisdom, granted_experience = 500, milked_reagent = null)
+	src.milked_reagent = milked_reagent
 	. = ..()
 	src.granted_wisdom = granted_wisdom
 	if(!granted_wisdom)
@@ -21,6 +22,11 @@
 /mob/living/basic/cow/wisdom/setup_eating()
 	return //cannot tame me! and I don't care about eatin' nothing, neither!
 
+/mob/living/basic/cow/wisdom/setup_udder()
+	if (isnull(milked_reagent))
+		milked_reagent = get_random_reagent_id()
+	return ..()
+
 /datum/ai_controller/basic_controller/cow/wisdom
 	//don't give a targeting strategy
 	blackboard = list(