.NET: Unable to test handoffs workflow using DevUI

[debarghyaroy012]

Please find the repro steps here:

1. Define a handoffs workflow and add it to service collection like below:

builder.AddWorkflow("HandoffsTutorWorkflow", (sp, key) =>
{
    var client = sp.GetRequiredService<IChatClient>();
    ChatClientAgent historyTutor = new(client,
            "You provide assistance with historical queries. Explain important events and context clearly. Only respond about history.",
            "history_tutor",
            "Specialist agent for historical questions");
    ChatClientAgent mathTutor = new(client,
        "You provide help with math problems. Explain your reasoning at each step and include examples. Only respond about math.",
        "math_tutor",
        "Specialist agent for math questions");
    ChatClientAgent triageAgent = new(client,
        "You determine which agent to use based on the user's homework question. ALWAYS handoff to another agent.",
        "triage_agent",
        "Routes messages to the appropriate specialist agent");
    return AgentWorkflowBuilder.CreateHandoffBuilderWith(triageAgent)
        .WithHandoffs(triageAgent, [mathTutor, historyTutor])
        .WithHandoffs([mathTutor, historyTutor], triageAgent)
        .Build();
}).AddAsAIAgent();

2. Then add DevUI dependencies.
3. Start the service.
4. You will encounter the below error:
   The workflow factory returned workflow with name '', but expected name is 'HandoffsTutorWorkflow'.