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/ParticleAccelerator/UI/ParticleAcceleratorBoundUserInterface.cs

@@ -1,5 +1,6 @@
 using Content.Shared.Singularity.Components;
 using Robust.Client.GameObjects;
+using Robust.Client.UserInterface;
 
 namespace Content.Client.ParticleAccelerator.UI
 {
@@ -16,9 +17,10 @@ namespace Content.Client.ParticleAccelerator.UI
         {
             base.Open();
 
-            _menu = new ParticleAcceleratorControlMenu(this);
-            _menu.OnClose += Close;
-            _menu.OpenCentered();
+            _menu = this.CreateWindow<ParticleAcceleratorControlMenu>();
+            _menu.OnOverallState += SendEnableMessage;
+            _menu.OnPowerState += SendPowerStateMessage;
+            _menu.OnScanPartsRequested += SendScanPartsMessage;
         }
 
         public void SendEnableMessage(bool enable)
@@ -40,13 +42,5 @@ namespace Content.Client.ParticleAccelerator.UI
         {
             _menu?.DataUpdate((ParticleAcceleratorUIState) state);
         }
-
-        protected override void Dispose(bool disposing)
-        {
-            base.Dispose(disposing);
-
-            _menu?.Dispose();
-            _menu = null;
-        }
     }
 }