fix(blood): Modifies remove_reagent calls to remove_blood calls

Fixes https://github.com/VOREStation/VOREStation/issues/14817

remove_reagent has no sanitization for making sure the person has at least 1 u of blood remaining, and is therefore unsafe to use.

This commit changes all human remove_reagent("blood", amt) calls with remove_blood(amt).

This should prevent blood disappearing from internal bleeding or dragging someone while they're down or from drawing blood from them and so forth.

Not all cases of remove_reagent("blood", amt) were changed, as some act on organs or other reagent containers not part of a human mob or because it's set_species

code/game/gamemodes/cult/construct_spells.dm

@@ -472,7 +472,7 @@
 		var/mob/living/carbon/human/H = owner
 		if(!H.should_have_organ(O_HEART))
 			return 1
-		if(H.vessel.remove_reagent("blood", amount))
+		if(H.remove_blood(amount))
 			return 1
 	return 0
 
@@ -673,4 +673,4 @@
 		else
 			user.visible_message("<b>\The [user]</b> lowers its fist.")
 			return
-	qdel(src)
+	qdel(src)

code/modules/mob/living/carbon/human/human.dm

@@ -1261,7 +1261,7 @@
 			vessel.maximum_volume = species.blood_volume
 			vessel.add_reagent("blood", species.blood_volume - vessel.total_volume)
 		else if(vessel.total_volume > species.blood_volume)
-			vessel.remove_reagent("blood", vessel.total_volume - species.blood_volume)
+			vessel.remove_reagent("blood",vessel.total_volume - species.blood_volume) //This one should stay remove_reagent to work even lack of a O_heart
 			vessel.maximum_volume = species.blood_volume
 		fixblood()
 		species.update_attack_types() //VOREStation Edit - Required for any trait that updates unarmed_types in setup.
@@ -1731,7 +1731,7 @@
 			if(blood_volume < species?.blood_volume*species?.blood_level_fatal)
 				bloodtrail = 0	//Most of it's gone already, just leave it be
 			else
-				vessel.remove_reagent("blood", 1)
+				remove_blood(1)
 		if(bloodtrail)
 			if(istype(loc, /turf/simulated))
 				var/turf/T = loc

code/modules/mob/living/simple_mob/subtypes/animal/sif/leech.dm

@@ -183,7 +183,7 @@
 
 		if(!docile && ishuman(host) && chemicals < max_chemicals)
 			var/mob/living/carbon/human/H = host
-			H.vessel.remove_reagent("blood", 1)
+			H.remove_blood(1)
 			if(!H.reagents.has_reagent("inaprovaline"))
 				H.reagents.add_reagent("inaprovaline", 1)
 			chemicals += 2

code/modules/organs/blood.dm

@@ -260,7 +260,7 @@ var/const/CE_STABLE_THRESHOLD = 0.5
 		return null
 
 	. = ..()
-	vessel.remove_reagent("blood",amount) // Removes blood if human
+	remove_blood(amount) // Removes blood if human
 
 //Transfers blood from container ot vessels
 /mob/living/carbon/proc/inject_blood(var/datum/reagent/blood/injected, var/amount)

code/modules/organs/organ_external.dm

@@ -750,7 +750,7 @@ Note that amputating the affected organ does in fact remove the infection from t
 			if(!(W.can_autoheal() || (bicardose && inaprovaline) || myeldose))	//bicaridine and inaprovaline stop internal wounds from growing bigger with time, unless it is so small that it is already healing
 				W.open_wound(0.1 * wound_update_accuracy)
 
-			owner.vessel.remove_reagent("blood", wound_update_accuracy * W.damage/40) //line should possibly be moved to handle_blood, so all the bleeding stuff is in one place.
+			owner.remove_blood( wound_update_accuracy * W.damage/40) //line should possibly be moved to handle_blood, so all the bleeding stuff is in one place.
 			if(prob(1 * wound_update_accuracy))
 				owner.custom_pain("You feel a stabbing pain in your [name]!", 50)
 

code/modules/xenoarcheaology/effects/vampire.dm

@@ -27,7 +27,7 @@
 		B.target_turf = pick(RANGE_TURFS(1, holder))
 		B.blood_DNA = list()
 		B.blood_DNA[M.dna.unique_enzymes] = M.dna.b_type
-		M.vessel.remove_reagent("blood",rand(10,30))
+		M.remove_blood(rand(10,30))
 
 /datum/artifact_effect/vampire/DoEffectTouch(var/mob/user)
 	bloodcall(user)

code/modules/xenoarcheaology/finds/special.dm

@@ -134,7 +134,7 @@
 		B.target_turf = pick(range(1, src))
 		B.blood_DNA = list()
 		B.blood_DNA[M.dna.unique_enzymes] = M.dna.b_type
-		M.vessel.remove_reagent("blood",rand(25,50))
+		M.remove_blood(rand(25,50))
 
 //animated blood 2 SPOOKY
 /obj/effect/decal/cleanable/blood/splatter/animated