Ensure excluded shops are captured by #closed_shops

app/services/shops_list_service.rb

@@ -1,15 +1,17 @@
 # frozen_string_literal: true
 
 class ShopsListService
+  # shops that are ready for checkout, and have an order cycle that is currently open
   def open_shops
     shops_list.
       ready_for_checkout.
-      distributors_with_active_order_cycles.
-      all
+      distributors_with_active_order_cycles
   end
 
+  # shops that are either not ready for checkout, or don't have an open order cycle; the inverse of
+  # #open_shops
   def closed_shops
-    shops_list.not_ready_for_checkout.all
+    shops_list.where.not(id: open_shops.reselect("enterprises.id"))
   end
 
   private