[FIX] website_forum: ask reason when refuse a post.

Call was done in ajax to speed up the moderation and don't wait refresh at each accpet/refuse post.
But the problem is that when you refuse a post, you need to be redirected to a new page to ask more
infos about the reason.
The fix is to do the request in ajax only when it is an 'accepted' post.

This commits fixes odoo/odoo@14462

addons/website_forum/static/src/js/website_forum.js

@@ -138,7 +138,7 @@ if(!$('.website_forum').length) {
             });
     });
 
-    $('.o_js_validation_queue a').on('click', function (ev) {
+    $(".o_js_validation_queue a[href*='/validate']").on('click', function (ev) {
         ev.preventDefault();
         var $link = $(ev.currentTarget);
         var self = $(this);