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/forensics/forensics_helpers.dm

@@ -200,7 +200,7 @@
 
 	var/dirty_hands = !!(target_flags & (ITEM_SLOT_GLOVES|ITEM_SLOT_HANDS))
 	var/dirty_feet = !!(target_flags & ITEM_SLOT_FEET)
-	var/slots_to_bloody = target_flags & ~check_covered_slots()
+	var/slots_to_bloody = target_flags & ~hidden_slots_to_inventory_slots(covered_slots)
 	var/list/all_worn = get_equipped_items()
 	for(var/obj/item/thing as anything in all_worn)
 		if(thing.slot_flags & slots_to_bloody)