⏪ Putting back the view mark flush handler

DysonNetwork.Sphere/Startup/ServiceCollectionExtensions.cs

@@ -143,6 +143,7 @@ public static class ServiceCollectionExtensions
     public static IServiceCollection AddAppFlushHandlers(this IServiceCollection services)
     {
         services.AddSingleton<FlushBufferService>();
+        services.AddScoped<PostViewFlushHandler>();
 
         return services;
     }