[FIX] website_event: typo tickets not disappear

Since 809aaf9e, when clicking on "Register Now" on a ticket registering
page, the ticket list disappeared because of a typo.

opw-1841488
closes #24607

addons/website_event/static/src/js/website_event.js

@@ -41,6 +41,7 @@ var EventRegistrationForm = Widget.extend({
         ev.preventDefault();
         ev.stopPropagation();
         var $form = $(ev.currentTarget).closest('form');
+        var $button = $(ev.currentTarget).closest('[type="submit"]');
         var post = {};
         $('#registration_form select').each(function () {
             post[$(this).attr('name')] = $(this).val();
@@ -54,9 +55,10 @@ var EventRegistrationForm = Widget.extend({
             return ajax.jsonRpc($form.attr('action'), 'call', post).then(function (modal) {
                 var $modal = $(modal);
                 $modal.find('.modal-body > div').removeClass('container'); // retrocompatibility - REMOVE ME in master / saas-19
-                $modal.after($form).modal();
+                $modal.insertAfter($form).modal();
                 $modal.on('click', '.js_goto_event', function () {
                     $modal.modal('hide');
+                    $button.prop('disabled', false);
                 });
             });
         }