#undef is now required for all file defines (#24091)

* CI

* undef

* hooooly crap

* yeah

* false by default

* fixes

* alright, there we go

* oops lmao

* lol, lmao even

* proper programming

* fix

* losin my mind

* oops

* yeah coloring

* WE LOVE MULTIPLE DEFINES (ive lost my sanity)

code/modules/reagents/chemistry/reagents/drugs.dm

@@ -1325,3 +1325,5 @@
 	return list(effect, update_flags)
 
 #undef DRAWBACK_CHANCE_MODIFIER
+#undef CONSTANT_DOSE_SAFE_LIMIT
+#undef CONSTANT_DOSE_DEATH_LIMIT

code/modules/reagents/chemistry/reagents_holder.dm

@@ -992,3 +992,6 @@
 	if(my_atom && my_atom.reagents == src)
 		my_atom.reagents = null
 	my_atom = null
+
+#undef ADDICTION_TIME
+#undef MINIMUM_REAGENT_AMOUNT

code/modules/reagents/reagent_containers/iv_bag.dm

@@ -217,3 +217,6 @@
 /obj/item/reagent_containers/iv_bag/slime/Initialize(mapload)
 	. = ..()
 	name = "[initial(name)] - Slime Jelly"
+
+#undef IV_DRAW
+#undef IV_INJECT