Prevent surgery tools and items from being rad contaminatable (#12413)

* Update tools.dm

* Update tools.dm

* Update robot_modules.dm

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

@@ -93,6 +93,7 @@
 	return new storage_type(src)
 
 /obj/item/robot_module/proc/add_module(obj/item/I, nonstandard, requires_rebuild)
+	rad_flags |= RAD_NO_CONTAMINATE
 	if(istype(I, /obj/item/stack))
 		var/obj/item/stack/S = I
 

code/modules/surgery/tools.dm

@@ -66,7 +66,6 @@
 	toolspeed = 0.5
 	attack_verb = list("attacked", "pinched")
 
-
 /obj/item/cautery
 	name = "cautery"
 	desc = "This stops bleeding."
@@ -91,7 +90,6 @@
 	toolspeed = 0.5
 	attack_verb = list("burnt")
 
-
 /obj/item/surgicaldrill
 	name = "surgical drill"
 	desc = "You can drill using this item. You dig?"
@@ -148,7 +146,6 @@
 	toolspeed = 0.5
 	attack_verb = list("drilled")
 
-
 /obj/item/scalpel
 	name = "scalpel"
 	desc = "Cut, cut, and once more cut."
@@ -229,7 +226,6 @@
 	user.visible_message("<span class='suicide'>[user] is slitting [user.p_their()] [pick("wrists", "throat", "stomach")] with [src]! It looks like [user.p_theyre()] trying to commit suicide!</span>")
 	return (BRUTELOSS)
 
-
 /obj/item/circular_saw
 	name = "circular saw"
 	desc = "For heavy duty cutting."