[FIX] website_event: display event menu items

Currently, when event manager clicks on 'Configure Event Tickets'
link on the event registration front-end page, it redirects
manager to the form view of that event. However, the top menu items
are missing.

This commit adds the 'menu_id' in link of the button so that when
being redirected to back-end (form view), the menu items are loaded
correctly.

taskID-2727609

closes odoo/odoo#85302

X-original-commit: 851a149f69e67f2fc7cf7a14f5eb4c087897b002
Signed-off-by: Warnon Aurélien (awa) <awa@odoo.com>

addons/website_event/views/event_templates_page_registration.xml

@@ -407,7 +407,7 @@
 <!-- Button to configure Tickets -->
 <template id="registration_configure_tickets_button" name="Registration Configure Ticket Button">
     <div class="o_not_editable mx-2" role="link">
-        <a class="text-nowrap" t-attf-href="/web#id=#{event.id}&amp;view_type=form&amp;model=event.event">
+        <a class="text-nowrap" t-attf-href="/web#id=#{event.id}&amp;menu_id=#{backend_menu_id}&amp;view_type=form&amp;model=event.event">
             <i class="fa fa-gear mr-1" role="img" aria-label="Configure" title="Configure event tickets"/><em>Configure Tickets</em>
         </a>
     </div>