Suppressed wrong null warning

I18N Commander/UI WinForms/Components/SectionTree.cs

@@ -10,7 +10,7 @@ namespace UI_WinForms.Components;
 public partial class SectionTree : UserControl
 {
     private static readonly Dictionary<TreeNode, EventHandler<DataModel.Database.Translation?>?> NODE_PROGRESS_HANDLERS = new();
-    private readonly Timer generatorTimer;
+    private readonly Timer generatorTimer = null!;
 
     public SectionTree()
     {