Backports the new zombification mechanics from the Konyang zombie event. (#18710)

* Reorder parasites

* sounds

* organ defines, dmdocs

* maiming stuff

* undead changes, abilities

* hylemnomil, undead sprites

* antibodies

* antibody extractor code

* icons

* antibody fixes

* antibodies vial, rock break sfx

* You're all going to die down here.

* hylemnomilz eta vial and attributions

* zombified organs can't be removed

* hylemnomil zeta edits

* fixes

* lmao

* easier check

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Co-authored-by: Matt Atlas <liermattia@gmail.com>

code/modules/surgery/organs_internal.dm

@@ -202,6 +202,9 @@
 	var/list/attached_organs = list()
 	for(var/organ in target.internal_organs_by_name)
 		var/obj/item/organ/I = target.internal_organs_by_name[organ]
+		/// Zombie organs can't be removed. Mainly to stop the zombie parasite from being removed.
+		if(I && (I.status & ORGAN_ZOMBIFIED))
+			continue
 		if(I && !(I.status & ORGAN_CUT_AWAY) && I.parent_organ == target_zone)
 			attached_organs |= organ