Replace ValidatePrototypeId uses with ProtoId or EntProtoId (#38814)

* The easy ones

* For certain values of easy

* Easy test

* Hair

* Fix sandbox violations

* Sort usings

Content.Shared/Inventory/VirtualItem/SharedVirtualItemSystem.cs

@@ -30,8 +30,7 @@ public abstract class SharedVirtualItemSystem : EntitySystem
     [Dependency] private readonly SharedHandsSystem _handsSystem = default!;
     [Dependency] private readonly SharedPopupSystem _popup = default!;
 
-    [ValidatePrototypeId<EntityPrototype>]
-    private const string VirtualItem = "VirtualItem";
+    private static readonly EntProtoId VirtualItem = "VirtualItem";
 
     public override void Initialize()
     {