Remove some BUI boilerplate (#28399)

* Remove some BUI boilerplate

- The disposals overrides got removed due to the helper method handling it.
- Replace window creation with CreateWindow helper.
- Fixed some stinky code which would cause exceptions.

* More

* moar

* weh

* done

* More BUIs

* More updates

* weh

* moar

* look who it is

* weh

* merge

* weh

* fixes

Content.Client/Anomaly/Ui/AnomalyGeneratorBoundUserInterface.cs

@@ -2,6 +2,7 @@ using Content.Shared.Anomaly;
 using Content.Shared.Gravity;
 using JetBrains.Annotations;
 using Robust.Client.GameObjects;
+using Robust.Client.UserInterface;
 
 namespace Content.Client.Anomaly.Ui;
 
@@ -18,10 +19,8 @@ public sealed class AnomalyGeneratorBoundUserInterface : BoundUserInterface
     {
         base.Open();
 
-        _window = new(Owner);
-
-        _window.OpenCentered();
-        _window.OnClose += Close;
+        _window = this.CreateWindow<AnomalyGeneratorWindow>();
+        _window.SetEntity(Owner);
 
         _window.OnGenerateButtonPressed += () =>
         {
@@ -37,18 +36,5 @@ public sealed class AnomalyGeneratorBoundUserInterface : BoundUserInterface
             return;
         _window?.UpdateState(msg);
     }
-
-    protected override void Dispose(bool disposing)
-    {
-        base.Dispose(disposing);
-        if (!disposing) return;
-
-        _window?.Dispose();
-    }
-
-    public void SetPowerSwitch(bool on)
-    {
-        SendMessage(new SharedGravityGeneratorComponent.SwitchGeneratorMessage(on));
-    }
 }