Fix BXGY Free Cart item quantity data getting (from JavaScript) issue

Resolve issue with BXGY Free Cart item quantity data retrieval from JavaScript.

// Fix - BXGY Free Cart item quantity data getting (from JavaScript) issue
add_action('woocommerce_cart_item_quantity', function($product_quantity, $cart_item_key, $cart_item) {
    if (is_numeric($product_quantity)) {
        $product_quantity = $product_quantity . ' ' . sprintf('<input type="hidden" name="cart[%s][qty]" value="%s" />', $cart_item_key, $product_quantity);
    }
    return $product_quantity;
}, 1000, 3);