Fixes jitteriness stacking up to insane amounts while dead (#67567)

* Jitter effect doesn't apply to dead people

* in apply, instead of create

code/datums/status_effects/debuffs/jitteriness.dm

@@ -8,6 +8,12 @@
 	return ..()
 
 /datum/status_effect/jitter/on_apply()
+	// If we're being applied to a dead person, don't make the status effect.
+	// Just do a bit of jitter animation and be done.
+	if(owner.stat == DEAD)
+		owner.do_jitter_animation(duration / 10)
+		return FALSE
+
 	RegisterSignal(owner, list(COMSIG_LIVING_POST_FULLY_HEAL, COMSIG_LIVING_DEATH), .proc/remove_jitter)
 	SEND_SIGNAL(owner, COMSIG_ADD_MOOD_EVENT, id, /datum/mood_event/jittery)
 	return TRUE