JS errors on product pages

Hi there,

Adding a product to the cart on single product pages causes a js error.

The cause is that the classic single product pages have the product id as value of the add_to_cart button rather than a separate data-product_id attribute. But parsing in classic.js is always done on the product_id attribute as can be seen here:

// Handle runtime cart events.
/**
 * Track the custom add to cart event dispatched by WooCommerce Core
 *
 * @param {Event}         e         - The event object
 * @param {Object}        fragments - An object containing fragments of the updated cart.
 * @param {string}        cartHash  - A string representing the hash of the cart after the update.
 * @param {HTMLElement[]} button    - An array of HTML elements representing the add to cart button.
 */
document.body.onadded_to_cart = ( e, fragments, cartHash, button ) => {
    tracker.eventHandler( 'add_to_cart' )( {
        product: getProductFromID(
            parseInt( button[ 0 ].dataset.product_id ),
            products,
            cart
        ),
    } );
};

A workaround is to add the product_id attribute in the single-product/add-to-cart/simple.php template.

		<button type="submit" name="add-to-cart" data-product_id="<?php echo esc_attr( $product->get_id() ); ?>" value="<?php echo esc_attr( $product->get_id() ); ?>" class="single_add_to_cart_button button alt<?php echo esc_attr( wc_wp_theme_get_element_class_name( 'button' ) ? ' ' . wc_wp_theme_get_element_class_name( 'button' ) : '' ); ?>"><?php echo esc_html( $product->single_add_to_cart_text() ); ?></button>

But i would appreciate if thats fixed in the js of the plugin!
Thanks,
Paul