[FIX] website_sale: traceback when adding payment terms

Go to the webshop checkout page.
Customise to add "Accept Terms & Conditions".
You get a traceback.

The 'change #checkbox_cgv' event was triggered before the initialisation
of the WebsiteSalePayment widget.

opw 2126456
opw 2122942

Closes odoo/odoo#39814

closes odoo/odoo#40553

X-original-commit: 2741f3d9ab7833e3d777d87206537eca6894ef79
Signed-off-by: Nans Lefebvre (len) <len@odoo.com>

addons/website_sale/static/src/js/website_sale.js

@@ -211,8 +211,6 @@ publicWidget.registry.WebsiteSale = publicWidget.Widget.extend(VariantMixin, {
 
         this.$('select[name="country_id"]').change();
 
-        this.$('#checkbox_cgv').trigger('change');
-
         core.bus.on('resize', this, function () {
             if (config.device.size_class === config.device.SIZES.XL) {
                 $('.toggle_summary_div').addClass('d-none d-xl-block');

addons/website_sale/static/src/js/website_sale_payment.js

@@ -15,7 +15,7 @@ publicWidget.registry.WebsiteSalePayment = publicWidget.Widget.extend({
     start: function () {
         this.$checkbox = this.$('#checkbox_cgv');
         this.$payButton = $('button#o_payment_form_pay');
-        this._adaptPayButton();
+        this.$checkbox.trigger('change');
         return this._super.apply(this, arguments);
     },