Add a new setting to choose the server landing page (#36588)

app/views/admin/settings/branding/show.html.haml

@@ -68,5 +68,12 @@
           = material_symbol 'delete'
           = t('admin.site_uploads.delete')
 
+  .fields-row
+    = f.input :landing_page,
+              collection: f.object.class::LANDING_PAGE,
+              include_blank: false,
+              label_method: ->(page) { I18n.t("admin.settings.landing_page.values.#{page}") },
+              wrapper: :with_label
+
   .actions
     = f.button :button, t('generic.save_changes'), type: :submit

app/views/admin/settings/discovery/show.html.haml

@@ -17,11 +17,6 @@
               as: :boolean,
               wrapper: :with_label
 
-  .fields-group
-    = f.input :trends_as_landing_page,
-              as: :boolean,
-              wrapper: :with_label
-
   .fields-group
     = f.input :trendable_by_default,
               as: :boolean,