Revert "Remove some BUI boilerplate" (#30214)

Revert "Remove some BUI boilerplate (#28399)"

This reverts commit cbf329a82d.

Content.Client/Anomaly/Ui/AnomalyGeneratorWindow.xaml.cs

@@ -18,21 +18,17 @@ public sealed partial class AnomalyGeneratorWindow : FancyWindow
 
     public Action? OnGenerateButtonPressed;
 
-    public AnomalyGeneratorWindow()
+    public AnomalyGeneratorWindow(EntityUid gen)
     {
         RobustXamlLoader.Load(this);
         IoCManager.InjectDependencies(this);
 
+        EntityView.SetEntity(gen);
         EntityView.SpriteOffset = false;
 
         GenerateButton.OnPressed += _ => OnGenerateButtonPressed?.Invoke();
     }
 
-    public void SetEntity(EntityUid uid)
-    {
-        EntityView.SetEntity(uid);
-    }
-
     public void UpdateState(AnomalyGeneratorUserInterfaceState state)
     {
         _cooldownEnd = state.CooldownEndTime;