Revert "Remove some BUI boilerplate" (#30214)

Revert "Remove some BUI boilerplate (#28399)"

This reverts commit cbf329a82d.

Content.Client/Chemistry/UI/ChemMasterBoundUserInterface.cs

@@ -2,7 +2,6 @@ using Content.Shared.Chemistry;
 using Content.Shared.Containers.ItemSlots;
 using JetBrains.Annotations;
 using Robust.Client.GameObjects;
-using Robust.Client.UserInterface;
 
 namespace Content.Client.Chemistry.UI
 {
@@ -28,8 +27,13 @@ namespace Content.Client.Chemistry.UI
             base.Open();
 
             // Setup window layout/elements
-            _window = this.CreateWindow<ChemMasterWindow>();
-            _window.Title = EntMan.GetComponent<MetaDataComponent>(Owner).EntityName;
+            _window = new ChemMasterWindow
+            {
+                Title = EntMan.GetComponent<MetaDataComponent>(Owner).EntityName,
+            };
+
+            _window.OpenCentered();
+            _window.OnClose += Close;
 
             // Setup static button actions.
             _window.InputEjectButton.OnPressed += _ => SendMessage(
@@ -71,5 +75,15 @@ namespace Content.Client.Chemistry.UI
 
             _window?.UpdateState(castState); // Update window state
         }
+
+        protected override void Dispose(bool disposing)
+        {
+            base.Dispose(disposing);
+
+            if (disposing)
+            {
+                _window?.Dispose();
+            }
+        }
     }
 }