[FIX] website_event_filter_city: Country filter support

When the country filter is inactive, the node used is a span but when
the country filter is activated with the editor, the node is replaced
by a div and this causes an error. To avoid this, the node is replaced
by something generic ‘*’ and so it will be located by its identifying
class regardless of whether the element is a span or a div.

website_event_filter_city/templates/event.xml

@@ -44,7 +44,7 @@
                 </div>
             </div>
         </xpath>
-        <xpath expr="//span[hasclass('o_wevent_offcanvas_country')]" position="after">
+        <xpath expr="//*[hasclass('o_wevent_offcanvas_country')]/.." position="after">
             <div class="accordion-item">
                 <h2 class="accordion-header">
                     <button