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/Research/UI/ResearchClientBoundUserInterface.cs

@@ -1,4 +1,6 @@
 using Content.Shared.Research.Components;
+using Robust.Client.GameObjects;
+using Robust.Client.UserInterface;
 
 namespace Content.Client.Research.UI
 {
@@ -15,10 +17,9 @@ namespace Content.Client.Research.UI
         protected override void Open()
         {
             base.Open();
-
-            _menu = new ResearchClientServerSelectionMenu(this);
-            _menu.OnClose += Close;
-            _menu.OpenCentered();
+            _menu = this.CreateWindow<ResearchClientServerSelectionMenu>();
+            _menu.OnServerSelected += SelectServer;
+            _menu.OnServerDeselected += DeselectServer;
         }
 
         public void SelectServer(int serverId)
@@ -37,12 +38,5 @@ namespace Content.Client.Research.UI
             if (state is not ResearchClientBoundInterfaceState rState) return;
             _menu?.Populate(rState.ServerCount, rState.ServerNames, rState.ServerIds, rState.SelectedServerId);
         }
-
-        protected override void Dispose(bool disposing)
-        {
-            base.Dispose(disposing);
-            if (!disposing) return;
-            _menu?.Dispose();
-        }
     }
 }