Revert "Remove some BUI boilerplate" (#30214)

Revert "Remove some BUI boilerplate (#28399)"

This reverts commit cbf329a82d.

Content.Client/Disposal/UI/DisposalRouterBoundUserInterface.cs

@@ -1,6 +1,5 @@
 using JetBrains.Annotations;
 using Robust.Client.GameObjects;
-using Robust.Client.UserInterface;
 using static Content.Shared.Disposal.Components.SharedDisposalRouterComponent;
 
 namespace Content.Client.Disposal.UI
@@ -22,16 +21,20 @@ namespace Content.Client.Disposal.UI
         {
             base.Open();
 
-            _window = this.CreateWindow<DisposalRouterWindow>();
+            _window = new DisposalRouterWindow();
+
+            _window.OpenCentered();
+            _window.OnClose += Close;
 
             _window.Confirm.OnPressed += _ => ButtonPressed(UiAction.Ok, _window.TagInput.Text);
             _window.TagInput.OnTextEntered += args => ButtonPressed(UiAction.Ok, args.Text);
+
         }
 
         private void ButtonPressed(UiAction action, string tag)
         {
             SendMessage(new UiActionMessage(action, tag));
-            Close();
+            _window?.Close();
         }
 
         protected override void UpdateState(BoundUserInterfaceState state)
@@ -45,5 +48,18 @@ namespace Content.Client.Disposal.UI
 
             _window?.UpdateState(cast);
         }
+
+        protected override void Dispose(bool disposing)
+        {
+            base.Dispose(disposing);
+
+            if (disposing)
+            {
+                _window?.Dispose();
+            }
+        }
+
+
     }
+
 }