Fixing some warnings (#6250)

Co-authored-by: Paul Ritter <ritter.paul1@googlemail.com>

Content.Client/Actions/UI/ActionMenu.cs

@@ -27,7 +27,7 @@ namespace Content.Client.Actions.UI
     /// Action selection menu, allows filtering and searching over all possible
     /// actions and populating those actions into the hotbar.
     /// </summary>
-    public class ActionMenu : SS14Window
+    public class ActionMenu : DefaultWindow
     {
         private const string ItemTag = "item";
         private const string NotItemTag = "not item";