/obj/item/clothing/head/mob_holder -> /obj/item/mob_holder (#91893)

## About The Pull Request
title
## Why It's Good For The Game
it inherits a lot of behavior from clothing which leads to lots of bugs
when it isn't actually clothes, for example: shredded overlays. this
should be better.
probably fixes a bunch of bugs
## Changelog
🆑
code: mob holders are no longer subtypes of clothes, report any issues
/🆑

---------

Co-authored-by: Jacquerel <hnevard@gmail.com>

code/game/objects/items/storage/boxes/job_boxes.dm

@@ -207,7 +207,7 @@
 	user.visible_message(span_suicide("[user] opens [src] and gets consumed by [p_them()]! It looks like [user.p_theyre()] trying to commit suicide!"))
 	playsound(user, 'sound/misc/scary_horn.ogg', 70, vary = TRUE)
 	forceMove(user.drop_location())
-	var/obj/item/clothing/head/mob_holder/consumed = new(src, user)
+	var/obj/item/mob_holder/consumed = new(src, user)
 	consumed.desc = "It's [user.real_name]! It looks like [user.p_they()] committed suicide!"
 	return OXYLOSS