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/NukeOps/WarDeclaratorBoundUserInterface.cs

@@ -2,6 +2,7 @@
 using Content.Shared.Chat;
 using Content.Shared.NukeOps;
 using JetBrains.Annotations;
+using Robust.Client.UserInterface;
 using Robust.Shared.Configuration;
 using Robust.Shared.Timing;
 
@@ -11,8 +12,6 @@ namespace Content.Client.NukeOps;
 public sealed class WarDeclaratorBoundUserInterface : BoundUserInterface
 {
     [Dependency] private readonly IConfigurationManager _cfg = default!;
-    [Dependency] private readonly IGameTiming _gameTiming = default!;
-    [Dependency] private readonly ILocalizationManager _localizationManager = default!;
 
     [ViewVariables]
     private WarDeclaratorWindow? _window;
@@ -23,13 +22,7 @@ public sealed class WarDeclaratorBoundUserInterface : BoundUserInterface
     {
         base.Open();
 
-        _window = new WarDeclaratorWindow(_gameTiming, _localizationManager);
-        if (State != null)
-            UpdateState(State);
-
-        _window.OpenCentered();
-
-        _window.OnClose += Close;
+        _window = this.CreateWindow<WarDeclaratorWindow>();
         _window.OnActivated += OnWarDeclaratorActivated;
     }
 
@@ -42,13 +35,6 @@ public sealed class WarDeclaratorBoundUserInterface : BoundUserInterface
         _window?.UpdateState(cast);
     }
 
-    protected override void Dispose(bool disposing)
-    {
-        base.Dispose(disposing);
-        if (disposing)
-            _window?.Dispose();
-    }
-
     private void OnWarDeclaratorActivated(string message)
     {
         var maxLength = _cfg.GetCVar(CCVars.ChatMaxAnnouncementLength);