fix(i18n): normalize setlang next path server-side

mandelstudio/urls.py

@@ -1,13 +1,14 @@
-from django.urls import include, path
+from django.urls import path
 from django.views.decorators.cache import cache_page
 
 from ocyan.main.urls import urlpatterns as ocyan_urlpatterns
 from ocyan.plugin.wagtail_oscar_integration.constants import CACHE_DURATION
 
+from .i18n_views import set_language_normalized
 from .sitemaps import robots_txt, sitemap_index, sitemap_section
 
 urlpatterns = [
-    path("i18n/", include("django.conf.urls.i18n")),
+    path("i18n/setlang/", set_language_normalized, name="set_language"),
     path("robots.txt", robots_txt, name="robots-txt"),
     path(
         "sitemap.xml",