fix: improve loading on destination overview page

- Only load data from Contentstack
- Use static JSON for destination list
- Some logic improvements to data handling and types

apps/scandic-web/lib/graphql/Query/DestinationOverviewPage/DestinationOverviewPage.graphql

@@ -4,7 +4,7 @@
 
 query GetDestinationOverviewPage($locale: String!, $uid: String!) {
   destination_overview_page(uid: $uid, locale: $locale) {
-    title
+    heading
     url
     blocks {
       __typename

apps/scandic-web/lib/trpc/memoizedRequests/index.ts

@@ -181,6 +181,7 @@ export const getDestinationOverviewPage = cache(
     return serverClient().contentstack.destinationOverviewPage.get()
   }
 )
+
 export const getDestinationsList = cache(
   async function getMemoizedDestinationsList() {
     return serverClient().contentstack.destinationOverviewPage.destinations.get()