[FIX] website_form: don't check editable_select elements

They are supposed to be removed by clean_for_save, but when
someone breaks it, the result is a js error here instead of
a proper error in the subsequent tour steps.

addons/website_form/static/src/js/website_form.js

@@ -131,7 +131,7 @@ odoo.define('website_form.animation', function (require) {
 
                 // Validate inputs for this field
                 var field_valid = true;
-                var inputs = $field.find('.o_website_form_input');
+                var inputs = $field.find('.o_website_form_input:not(#editable_select)');
                 var invalid_inputs = inputs.toArray().filter(function(input, k, inputs) {
                     // Special check for multiple required checkbox for same
                     // field as it seems checkValidity forces every required