fix: State Updates are not published without CheckpointManager (#501)

dotnet/tests/Microsoft.Agents.Workflows.UnitTests/ForwardMessageExecutor.cs

@@ -0,0 +1,11 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+namespace Microsoft.Agents.Workflows.UnitTests;
+
+internal sealed class ForwardMessageExecutor<TMessage> : Executor where TMessage : notnull
+{
+    protected override RouteBuilder ConfigureRoutes(RouteBuilder routeBuilder)
+    {
+        return routeBuilder.AddHandler<TMessage>((message, ctx) => ctx.SendMessageAsync(message));
+    }
+}