FIJISettingsViewer: transfer focus if radio buttons to select drivers are pressed

bin/Tk/FIJISettingsViewer.pm

@@ -1622,6 +1622,8 @@ sub _add_driver_radiobutton_list {
             $driver_label->configure(-text => $conn->{str});
         } else {
             $radio_button = $driver_container_pane->Radiobutton(-value => $conn, -variable => \$sel);
+            $radio_button->bind('<ButtonRelease-1>', sub { $radio_button->focus(); });
+
             $driver_label = $driver_container_pane->Label(-text => $conn->{str}, -justify => "left");
             $radio_button->grid(-row => $i + 1, -column => 0);
             $driver_label->grid(-row => $i + 1, -column => 1, -sticky => "w");