label show property(allow to disable if always displayed)

If we build form with pre-defined template with labels and try to use SwitchBox label could be displayed in 2 times:
``
        <?= $form->field($model, 'login_captcha')->widget(SwitchBox::className(),[]) ?>
``
so i suggest add param to disable label view automaticly with widget:
``
        <?= $form->field($model, 'login_captcha')->widget(SwitchBox::className(),[
            'showLabel' => false,
        ]) ?>
``