Allow containment field generators to be enabled on mapinit (#31158)

* Initial commit

* review fix

Content.Server/Singularity/EntitySystems/ContainmentFieldGeneratorSystem.cs

@@ -37,6 +37,7 @@ public sealed class ContainmentFieldGeneratorSystem : EntitySystem
         SubscribeLocalEvent<ContainmentFieldGeneratorComponent, UnanchorAttemptEvent>(OnUnanchorAttempt);
         SubscribeLocalEvent<ContainmentFieldGeneratorComponent, ComponentRemove>(OnComponentRemoved);
         SubscribeLocalEvent<ContainmentFieldGeneratorComponent, EventHorizonAttemptConsumeEntityEvent>(PreventBreach);
+        SubscribeLocalEvent<ContainmentFieldGeneratorComponent, MapInitEvent>(OnMapInit);
     }
 
     public override void Update(float frameTime)
@@ -61,6 +62,12 @@ public sealed class ContainmentFieldGeneratorSystem : EntitySystem
 
     #region Events
 
+    private void OnMapInit(Entity<ContainmentFieldGeneratorComponent> generator, ref MapInitEvent args)
+    {
+        if (generator.Comp.Enabled)
+            ChangeFieldVisualizer(generator);
+    }
+
     /// <summary>
     /// A generator receives power from a source colliding with it.
     /// </summary>

Content.Shared/Singularity/Components/ContainmentFieldGeneratorComponent.cs

@@ -79,7 +79,7 @@ public sealed partial class ContainmentFieldGeneratorComponent : Component
     /// <summary>
     /// Is the generator toggled on?
     /// </summary>
-    [ViewVariables]
+    [DataField]
     public bool Enabled;
 
     /// <summary>