Fixes borg chargers constantly (abet slowly) draining borg cells. (#83743)

## About The Pull Request
- Adds in checks for the borg consumables resupplying to stop drawing
power once supplies are full. Specifically, the `respawn_consumables()`
proc will run attempting to stock everything it can, and will return
TRUE if any item required stocking.
## Why It's Good For The Game
Certain borg tools are still supplied by the borg chargers directly at a
power cost because material costs just don't make sense. These did not
have a check in place for if the various resources were full, meaning
every process cycle a bit of the borg's cell would be used attempting to
restock things. Since it's a percentage of the cell's current charge, a
filled bluespace cell could have a surprising power leak.

Now that borg chargers pull directly from the SMES units, borgs don't
recharge if the powernet is empty (regardless of local APC charge). But
borg consumables restocking carries on, which causes borgs to slowly
drain. So I have added some checks to stop the drain if nothing was
actually done.
## Changelog
🆑
fix: Fixed borg chargers (especially unpowered ones) constantly draining
a borg's cell.
/🆑

code/modules/mob/living/silicon/robot/robot.dm

@@ -952,7 +952,9 @@
 	SIGNAL_HANDLER
 
 	if(model)
-		model.respawn_consumable(src, cell.use(cell.charge * 0.005))
+		if(cell.charge)
+			if(model.respawn_consumable(src, cell.charge * 0.005))
+				cell.use(cell.charge * 0.005)
 		if(sendmats)
 			model.restock_consumable()
 	if(repairs)

code/modules/mob/living/silicon/robot/robot_model.dm

@@ -137,29 +137,43 @@
 	if(cyborg.hud_used)
 		cyborg.hud_used.update_robot_modules_display()
 
+
+///Restocks things that don't take mats, generally at a power cost. Returns True if anything was restocked/replaced, and False otherwise.
 /obj/item/robot_model/proc/respawn_consumable(mob/living/silicon/robot/cyborg, coeff = 1)
 	SHOULD_CALL_PARENT(TRUE)
 
+	///If anything was actually replaced/refilled/recharged. If not, we won't draw power.
+	. = FALSE
+
 	for(var/datum/robot_energy_storage/storage_datum in storages)
 		if(storage_datum.renewable == FALSE)
 			continue
-		storage_datum.energy = min(storage_datum.max_energy, storage_datum.energy + coeff * storage_datum.recharge_rate)
+		if(storage_datum.energy < storage_datum.max_energy)
+			. = TRUE
+			storage_datum.energy = min(storage_datum.max_energy, storage_datum.energy + coeff * storage_datum.recharge_rate)
 
 	for(var/obj/item/module in get_usable_modules())
 		if(istype(module, /obj/item/assembly/flash))
 			var/obj/item/assembly/flash/flash = module
+			if(flash.burnt_out)
+				. = TRUE
 			flash.times_used = 0
 			flash.burnt_out = FALSE
 			flash.update_appearance()
 		else if(istype(module, /obj/item/melee/baton/security))
 			var/obj/item/melee/baton/security/baton = module
-			baton.cell?.charge = baton.cell.maxcharge
+			if(baton.cell?.charge < baton.cell.maxcharge)
+				. = TRUE //if sec borgs ever make a mainstream return, we should probably do this differntly.
+				baton.cell?.charge = baton.cell.maxcharge
 		else if(istype(module, /obj/item/gun/energy))
 			var/obj/item/gun/energy/gun = module
 			if(!gun.chambered)
+				. = TRUE
 				gun.recharge_newshot() //try to reload a new shot.
 
-	cyborg.toner = cyborg.tonermax
+	if(cyborg.toner < cyborg.tonermax)
+		. = TRUE
+		cyborg.toner = cyborg.tonermax
 
 /**
  * Refills consumables that require materials, rather than being given for free.
@@ -350,6 +364,7 @@
 	if(!soap)
 		return
 	if(soap.uses < initial(soap.uses))
+		. = TRUE
 		soap.uses += ROUND_UP(initial(soap.uses) / 100) * coeff
 
 /obj/item/robot_model/engineering
@@ -627,20 +642,29 @@
 	..()
 	var/obj/item/lightreplacer/light_replacer = locate(/obj/item/lightreplacer) in basic_modules
 	if(light_replacer)
-		light_replacer.Charge(cyborg, coeff)
+		if(light_replacer.uses < light_replacer.max_uses)
+			. = TRUE
+			light_replacer.Charge(cyborg, coeff)
 
 	var/obj/item/reagent_containers/spray/cyborg_drying/drying_agent = locate(/obj/item/reagent_containers/spray/cyborg_drying) in basic_modules
 	if(drying_agent)
-		drying_agent.reagents.add_reagent(/datum/reagent/drying_agent, 5 * coeff)
+		var/datum/reagents/anti_water = drying_agent.reagents
+		if(anti_water.total_volume < anti_water.maximum_volume)
+			. = TRUE
+			drying_agent.reagents.add_reagent(/datum/reagent/drying_agent, 5 * coeff)
 
 	var/obj/item/reagent_containers/spray/cyborg_lube/lube = locate(/obj/item/reagent_containers/spray/cyborg_lube) in emag_modules
 	if(lube)
-		lube.reagents.add_reagent(/datum/reagent/lube, 2 * coeff)
+		var/datum/reagents/anti_friction = lube.reagents
+		if(anti_friction.total_volume < anti_friction.maximum_volume)
+			. = TRUE
+			lube.reagents.add_reagent(/datum/reagent/lube, 2 * coeff)
 
 	var/obj/item/soap/nanotrasen/cyborg/soap = locate(/obj/item/soap/nanotrasen/cyborg) in basic_modules
 	if(!soap)
 		return
 	if(soap.uses < initial(soap.uses))
+		. = TRUE
 		soap.uses += ROUND_UP(initial(soap.uses) / 100) * coeff
 
 /obj/item/robot_model/medical
@@ -760,6 +784,7 @@
 	var/obj/item/gun/energy/e_gun/advtaser/cyborg/taser = locate(/obj/item/gun/energy/e_gun/advtaser/cyborg) in basic_modules
 	if(taser)
 		if(taser.cell.charge < taser.cell.maxcharge)
+			. = TRUE
 			var/obj/item/ammo_casing/energy/shot = taser.ammo_type[taser.select]
 			taser.cell.give(shot.e_cost * coeff)
 			taser.update_appearance()
@@ -811,7 +836,10 @@
 	..()
 	var/obj/item/reagent_containers/enzyme = locate(/obj/item/reagent_containers/condiment/enzyme) in basic_modules
 	if(enzyme)
-		enzyme.reagents.add_reagent(/datum/reagent/consumable/enzyme, 2 * coeff)
+		var/datum/reagents/spicyketchup = enzyme.reagents
+		if(spicyketchup.total_volume < spicyketchup.maximum_volume)
+			. = TRUE
+			enzyme.reagents.add_reagent(/datum/reagent/consumable/enzyme, 2 * coeff)
 
 /obj/item/robot_model/syndicate
 	name = "Syndicate Assault"