Swaps species.total_health for getMaxHealth() (#18702)

* Swaps species.total_health for getMaxHealth()

* fix this as well

shock_stage is what they want to increase, NOT traumatic val as it gets reeset as soon as we have a shock tick

code/modules/organs/organ_external.dm

@@ -972,7 +972,7 @@ Note that amputating the affected organ does in fact remove the infection from t
 	var/use_blood_colour = data.get_species_blood_colour(owner)
 
 	removed(null, ignore_children)
-	victim?.traumatic_shock += 60
+	victim?.shock_stage += 60
 
 	if(parent_organ)
 		var/datum/wound/lost_limb/W = new (src, disintegrate, clean)