Removed archived tiers from portal tiers list

refs https://github.com/TryGhost/Team/issues/1404

The archived tiers are hidden in Portal normally as they are automatically not included in the `portal_products` list. This change also removes the archived tiers from being sent in list of tiers sent as part of site data to Portal. This ensures Portal doesn't use any archived tier.

core/server/services/members/middleware.js

@@ -110,9 +110,12 @@ const getPortalProductPrices = async function () {
             monthlyPrice: product.monthlyPrice,
             yearlyPrice: product.yearlyPrice,
             benefits: product.benefits,
+            active: product.active,
             type: product.type,
             prices: productPrices
         };
+    }).filter((product) => {
+        return !!product.active;
     });
     const defaultProduct = products.find((product) => {
         return product.type === 'paid';