fixed focus on closing syncdir

src/main/java/cz/kamma/kfmanager/ui/MainWindow.java

@@ -1796,6 +1796,9 @@ public class MainWindow extends JFrame {
         File rightDir = rightPanel.getCurrentDirectory();
         SyncDirectoriesDialog dialog = new SyncDirectoriesDialog(this, leftDir, rightDir, config);
         dialog.setVisible(true);
+        
+        // After closing sync dialog, return focus to the active panel
+        requestFocusInActivePanel();
     }
 
     /**