Prestashop disable default attribute value on product page

custom.js

/*********************
* Prestashop
* Simple quick 
* (and maybe dirty) 
* fix
* (works for radio button)
*
**********************/
let your_attribute_id = 42; // the attribute group
let selected_taille = document.querySelector('[data-product-attribute="'+your_attribute_id+'"][checked]');
if ( selected_taille) {
    selected_taille.checked=false;
    let add_to_cart = document.querySelector('button.add-to-cart');
    add_to_cart.disabled=true;
}