Fixed free signup portal link for multiple tiers

no refs

- free signup portal link with multiple tiers enabled was incorrectly showing all tiers instead of just free

ghost/portal/src/components/pages/SignupPage.js

@@ -446,8 +446,8 @@ class SignupPage extends React.Component {
     }
 
     renderProducts() {
-        const {site} = this.context;
-        const products = getSiteProducts({site});
+        const {site, pageQuery} = this.context;
+        const products = getSiteProducts({site, pageQuery});
         return (
             <>
                 <ProductsSection

ghost/portal/src/utils/fixtures.js

@@ -39,7 +39,7 @@ const products = [
     //     }),
     //     numOfBenefits: 3
     // })
-    // ,
+
     // getProductData({
     //     name: 'Friends of the Blueprint',
     //     description: 'Get access to everything and lock in early adopter pricing for life + listen to my podcast',
@@ -67,7 +67,7 @@ export const site = getSiteData({
         yearly: 150000,
         currency: 'USD'
     },
-    
+
     // Simulate pre-multiple-tiers state:
     // products: [products.find(d => d.type === 'paid')],
     // portalProducts: null,

ghost/portal/src/utils/helpers.js

@@ -256,8 +256,12 @@ export function hasBenefits({prices, site}) {
     });
 }
 
-export function getSiteProducts({site}) {
+export function getSiteProducts({site, pageQuery}) {
     const products = getAvailableProducts({site});
+    const showOnlyFree = pageQuery === 'free' && hasFreeProductPrice({site});
+    if (showOnlyFree) {
+        return [];
+    }
     if (hasFreeProductPrice({site}) && products.length > 0) {
         products.unshift({
             id: 'free'