Content struct enumerators (#11894)

Content.Shared/Revenant/EntitySystems/SharedRevenantOverloadedLightsSystem.cs

@@ -11,11 +11,12 @@ public abstract class SharedRevenantOverloadedLightsSystem : EntitySystem
     {
         base.Update(frameTime);
 
-        foreach (var comp in EntityQuery<RevenantOverloadedLightsComponent>())
+        var enumerator = EntityQueryEnumerator<RevenantOverloadedLightsComponent>();
+
+        while (enumerator.MoveNext(out var comp))
         {
             comp.Accumulator += frameTime;
 
-
             if (comp.Accumulator < comp.ZapDelay)
                 continue;