[MIRROR] Bileworms won't evolve if they're dead [MDB IGNORE] (#19363)

* Bileworms won't evolve if they're dead (#73427)

## About The Pull Request

Fixes #70865
I kind of agree with the comments that it would be funny to canonise
_something else_ happening to dead ones once the alive ones evolve but
that would qualify as "a feature".

## Why It's Good For The Game

Even if it's pretty funny it's not really ideal for unbutchered mobs to
come back to life without warning at the 30 minute mark, and clearly not
intended.

## Changelog

🆑
fix: Bileworms which have been struck down but not butchered no longer
return in a more powerful form.
/🆑

* Bileworms won't evolve if they're dead

---------

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

code/datums/components/evolutionary_leap.dm

@@ -51,6 +51,8 @@
 
 /datum/component/evolutionary_leap/proc/leap(silent)
 	var/mob/living/old_mob = parent
+	if (old_mob.stat == DEAD)
+		return
 	var/mob/living/new_mob = evolve_path
 	var/new_mob_name = initial(new_mob.name)
 	if(!silent)