Wire up the set store checkout relation

Author: mattbrailsford

src/Umbraco.Commerce.Checkout/Events/SetCheckoutStoreRootRelation.cs renamed to src/Umbraco.Commerce.Checkout/Events/SetStoreCheckoutRelation.cs

@@ -9,7 +9,7 @@
 
 namespace Umbraco.Commerce.Checkout.Events;
 
-public class SetCheckoutStoreRootRelation(
+public class SetStoreCheckoutRelation(
     IDocumentNavigationQueryService documentNavigationQueryService,
     IContentService contentService,
     IIdKeyMap keyMap,

src/Umbraco.Commerce.Checkout/UmbracoCommerceCheckoutUmbracoBuilderExtensions.cs

@@ -47,6 +47,7 @@ public static IUmbracoBuilder AddUmbracoCommerceCheckout(
 
             // Register Umbraco event handlers
             builder.AddNotificationAsyncHandler<ContentCacheRefresherNotification, SyncZeroValuePaymentProviderContinueUrl>();
+            builder.AddNotificationAsyncHandler<ContentCacheRefresherNotification, SetStoreCheckoutRelation>();
 
             return builder;
         }