[MIRROR] Reworks transformation sting to be temporarily in living mobs, forever in dead mobs [MDB IGNORE] (#24002)

* Reworks transformation sting to be temporarily in living mobs, forever in dead mobs

* Modular updates

* Recaches the icons generated in the `changeling` unit test

* Pain

* More tweaks

* Disable unit test

* Let's see if we can pass test temporarily

* Makes transformation sting unobtainable more cleanly

* Unit test

* Cursed proc

* Kill the unholy copy pasta

Seriously this stuff is just awful. This is not maintainable.

* test this

* Update comments

* Fixing the screenshot test, maybe?

* grrr

* Update changeling.dm

* Attempt to fix this nonsense

* Update changeling.dm

* Update changeling.dm

* Update changeling.dm

* Update dna.dm

* Fixes it?

* Screenshot test

* Update _traits.dm

* Update _traits.dm

* Fix this

* Update dna.dm

* Update dna.dm

* Hmm

* This proc needs a new name

* I want to scream but I have no mutant parts

* Fix

* Update species.dm

* Update species.dm

* Update species.dm

* Update species.dm

* Some touch ups

---------

Co-authored-by: MrMelbert <51863163+MrMelbert@users.noreply.github.com>
Co-authored-by: Giz <13398309+vinylspiders@users.noreply.github.com>
Co-authored-by: Jolly <70232195+Jolly-66@users.noreply.github.com>

code/modules/bitrunning/components/netpod_healing.dm

@@ -49,6 +49,13 @@
 	id = "embryonic"
 	alert_type = /atom/movable/screen/alert/status_effect/embryonic
 
+/datum/status_effect/embryonic/on_apply()
+	ADD_TRAIT(owner, TRAIT_STASIS, TRAIT_STATUS_EFFECT(id))
+	return TRUE
+
+/datum/status_effect/embryonic/on_remove()
+	REMOVE_TRAIT(owner, TRAIT_STASIS, TRAIT_STATUS_EFFECT(id))
+
 /atom/movable/screen/alert/status_effect/embryonic
 	name = "Embryonic Stasis"
 	icon_state = "netpod_stasis"