Refactors obscured (#92779)

## About The Pull Request

Fixes #85028

Obscured flags and covered flags are tracked on carbons, updated as
items are equipped and unequipped. It's that shrimple.

Closes #92760

Just removes the species exception checks for not making sense

Also refactors handcuffs / legcuffs removal. In all of these situations
they were hardcoded when they could easily just use an inventory proc to
work.

## Why It's Good For The Game

Stops a million excessive calls to `check_obscured_slots`

Makes obscured behavior more consistent

Makes obscured behavior easier to use

Cleans up human rendering (There was some cursed stuff before with
render item -> updated obscured -> update body -> cause side effects)

## Changelog

🆑 Melbert
del: Golems which somehow manage to grow wings and somehow manage to
equip something that covers their jumpsuit can no longer fly.
(Seriously, this will not affect anyone)
refactor: Refactored clothing obscurity entirely. Items should be a
loooot more consistent and what covers what, and should update a lot
snappier. As always, report any oddities, like mysteriously disappearing
articles of clothing, hair, or species parts
refactored: Refactored handcuffs and legcuffs a bit, report any odd
situations with cuffs like getting stuck restrained
/🆑

code/modules/surgery/organs/internal/ears/_ears.dm

@@ -178,12 +178,7 @@
 	return SSaccessories.ears_list
 
 /datum/bodypart_overlay/mutant/cat_ears/can_draw_on_bodypart(obj/item/bodypart/bodypart_owner)
-	var/mob/living/carbon/human/human = bodypart_owner.owner
-	if(!istype(human))
-		return TRUE
-	if((human.head?.flags_inv & HIDEHAIR) || (human.wear_mask?.flags_inv & HIDEHAIR))
-		return FALSE
-	return TRUE
+	return !(bodypart_owner.owner?.obscured_slots & HIDEHAIR)
 
 /datum/bodypart_overlay/mutant/cat_ears/get_image(image_layer, obj/item/bodypart/limb)
 	var/mutable_appearance/base_ears = ..()

code/modules/surgery/organs/internal/eyes/_eyes.dm

@@ -267,8 +267,7 @@
 	var/mutable_appearance/eye_right = mutable_appearance('icons/mob/human/human_face.dmi', "[eye_icon_state]_r", -EYES_LAYER, parent)
 	var/list/overlays = list(eye_left, eye_right)
 
-	var/obscured = parent.check_obscured_slots()
-	if(overlay_ignore_lighting && !(obscured & ITEM_SLOT_EYES))
+	if(overlay_ignore_lighting && !(parent.obscured_slots & HIDEEYES))
 		overlays += emissive_appearance(eye_left.icon, eye_left.icon_state, parent, -EYES_LAYER, alpha = eye_left.alpha)
 		overlays += emissive_appearance(eye_right.icon, eye_right.icon_state, parent, -EYES_LAYER, alpha = eye_right.alpha)