Bugfix: Subscribers of app events must be reset when restarting

I18N Commander/UI WinForms/Components/Main.cs

@@ -16,6 +16,7 @@ public partial class Main : UserControl
             if(result == DialogResult.Yes)
             {
                 Program.RestartMainApp = true;
+                AppEvents.ResetAllSubscriptions();
                 this.ParentForm!.Close();
             }
         }