Stable run on Notification creation

LiteCharms.Features/Shop/Notifications/NotificationService.cs

@@ -31,7 +31,7 @@ public class NotificationService(IDbContextFactory<ShopDbContext> contextFactory
                 Processed = false
             });
 
-            return newNotification is not null
+            return await context.SaveChangesAsync(cancellationToken) > 0
                 ? Result.Ok(newNotification.Entity.Id)
                 : Result.Fail(new Error("Failed to create notification"));
         }