Lets you enter fakedeath when dead (#76666)

## About The Pull Request

Fixes #76665

`fakedeath` early returned if the mob was dead, I guess it assumed if
you were dead dead you wouldn't want to become fake dead as well

I removed that because it's definitely a valid use case, in my eyes,
that you would be able to apply the fakedeath traits to a mob who is
dead, for the event they are revived at some point (to still appear
dead)

## Why It's Good For The Game

Lings rely on this

## Changelog

🆑 Melbert
fix: Fix ling revival for full-dead lings
/🆑

code/modules/reagents/chemistry/reagents/toxin_reagents.dm

@@ -247,7 +247,7 @@
 /datum/reagent/toxin/zombiepowder/on_mob_metabolize(mob/living/holder_mob)
 	. = ..()
 	holder_mob.adjustOxyLoss(0.5*REM, FALSE, required_biotype = affected_biotype, required_respiration_type = affected_respiration_type)
-	if(data?["method"] & INGEST)
+	if((data?["method"] & INGEST) && holder_mob.stat != DEAD)
 		holder_mob.fakedeath(type)
 
 /datum/reagent/toxin/zombiepowder/on_mob_end_metabolize(mob/living/holder_mob)
@@ -274,7 +274,8 @@
 		if(5 to 8)
 			affected_mob.adjustStaminaLoss(40 * REM * seconds_per_tick, 0)
 		if(9 to INFINITY)
-			affected_mob.fakedeath(type)
+			if(affected_mob.stat != DEAD)
+				affected_mob.fakedeath(type)
 	..()
 	return TRUE