[FIX] website_membership: correctly check if customize view is active

Commit 5804246e0f introduced some improvements to speed up performances.
One of them was to check if a customize_show view was active or not but the
condition was on view.customize_show instead of view.active.

Thus, as that view is always a customize_show, the condition would always be
met.

closes odoo/odoo#29414

addons/website_membership/controllers/main.py

@@ -103,7 +103,7 @@ class WebsiteMembership(http.Controller):
 
         # get google maps localization of partners
         google_map_partner_ids = []
-        if request.env.ref('website_membership.opt_index_google_map').customize_show:
+        if request.env.ref('website_membership.opt_index_google_map').active:
             google_map_partner_ids = MembershipLine.search(line_domain).get_published_companies(limit=2000)
 
         search_domain = [('membership_state', '=', 'free'), ('website_published', '=', True)]