misc: mark gadjo_sidepage_status cookie as secure and strict (#45937)

gadjo/static/js/gadjo.js

@@ -310,6 +310,8 @@ var gadjo_js = gadjo_js || {};
           date.setTime(date.getTime() + (10 * 86400 * 1000)); /* a long week */
           document.cookie = 'gadjo_sidepage_status=' + sidepage_status +
                             '; expires=' + date.toGMTString() +
+                            (window.location.protocol == "https:" && "; Secure" || "") +
+                            '; sameSite=Strict' +
                             '; domain=.' + cookie_domain +
                             '; path=/';
         }