Stopped heart is also crit (while not a "disease" even technically) (#14937)

code/game/data_huds.dm

@@ -71,6 +71,7 @@
 //HELPERS
 
 /// Whether the carbon mob is currently in crit.
+// Even though "crit" does not realistically happen for non-humans..
 /mob/living/carbon/proc/is_in_crit()
 	for(var/thing in viruses)
 		var/datum/disease/D = thing
@@ -78,6 +79,13 @@
 			return TRUE
 	return FALSE
 
+/mob/living/carbon/human/is_in_crit()
+	if(..())
+		return TRUE
+	if(undergoing_cardiac_arrest())
+		return TRUE
+	return FALSE
+
 /// Whether a virus worthy displaying on the HUD is present.
 /mob/living/carbon/proc/has_virus()
 	for(var/thing in viruses)