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/Strip/StrippingMenu.cs

@@ -1,4 +1,3 @@
-using Content.Client.Inventory;
 using Robust.Client.UserInterface.Controls;
 using Robust.Client.UserInterface.CustomControls;
 using Robust.Shared.Timing;
@@ -11,14 +10,12 @@ namespace Content.Client.Strip
         public LayoutContainer InventoryContainer = new();
         public BoxContainer HandsContainer = new() { Orientation = LayoutOrientation.Horizontal };
         public BoxContainer SnareContainer = new();
-        private StrippableBoundUserInterface _bui;
         public bool Dirty = true;
 
-        public StrippingMenu(string title, StrippableBoundUserInterface bui)
-        {
-            Title = title;
-            _bui = bui;
+        public event Action? OnDirty;
 
+        public StrippingMenu()
+        {
             var box = new BoxContainer() { Orientation = LayoutOrientation.Vertical, Margin = new Thickness(0, 8) };
             Contents.AddChild(box);
             box.AddChild(SnareContainer);
@@ -39,7 +36,7 @@ namespace Content.Client.Strip
                 return;
 
             Dirty = false;
-            _bui.UpdateMenu();
+            OnDirty?.Invoke();
         }
     }
 }