Replace obsolete EntityWhitelist IsValid usages (#28465)

* Replace obsolete whitelist is valid with whitelist system

* Consistency

* Fix logic

* Bork

* I figured out how to get whitelists on the client lol

* test fail

* woops

* HELP ME FUNCTIONS

* Fix errors

* simplify

---------

Co-authored-by: plykiya <plykiya@protonmail.com>

Content.Shared/Weapons/Ranged/Systems/SharedGunSystem.Ballistic.cs

@@ -41,7 +41,10 @@ public abstract partial class SharedGunSystem
 
     private void OnBallisticInteractUsing(EntityUid uid, BallisticAmmoProviderComponent component, InteractUsingEvent args)
     {
-        if (args.Handled || component.Whitelist?.IsValid(args.Used, EntityManager) != true)
+        if (args.Handled)
+            return;
+
+        if (_whitelistSystem.IsWhitelistFailOrNull(component.Whitelist, args.Used))
             return;
 
         if (GetBallisticShots(component) >= component.Capacity)