.NET: [Bug]: ToolApprovalRequestContent triggers 2 times in handoff workflow with different Id's

[Mohanr1122]

Description

ToolApprovalRequestContent triggers 2 times in handoff workflow with different Id's
Using HandOffBuilder with triage agent and support agent, Approval requests triggering 2 times in RunStreamingAsync
one with normal request id and agentname:requestId.
I'm using workflow as Agent

Code Sample

Error Messages / Stack Traces

Package Versions

Microsoft.Agents.AI 1.19.0

.NET Version

.NET 10

Additional Context

No response

[github-actions]

🤖 Automated triage reproduction notes (agent-authored — trust but verify)

Agent analysis

Repro: dotnet/src/Microsoft.Agents.AI.Workflows/Specialized/AIAgentHostExecutor.cs::InvokeAgentAsync lines 226-295 emits an agent approval update and subsequently submits the same approval as an external request. It triggers when an approval-required tool is called inside a handoff workflow hosted with AsAIAgent and consumed through RunStreamingAsync. Minimal repro: build a triage-to-support handoff whose support agent calls an ApprovalRequiredAIFunction, host it as an agent, and collect streamed ToolApprovalRequestContent IDs.

• Failing test: dotnet/tests/Microsoft.Agents.AI.Workflows.UnitTests/HandoffOrchestrationTests.cs
• Files examined: dotnet/src/Microsoft.Agents.AI.Workflows/Specialized/AIAgentHostExecutor.cs, dotnet/src/Microsoft.Agents.AI.Workflows/Specialized/AIContentExternalHandler.cs, dotnet/src/Microsoft.Agents.AI.Workflows/Specialized/AIAgentUnservicedRequestsCollector.cs, dotnet/src/Microsoft.Agents.AI.Workflows/WorkflowSession.cs, dotnet/src/Microsoft.Agents.AI.Workflows/WorkflowHostAgent.cs, dotnet/tests/Microsoft.Agents.AI.Workflows.UnitTests/HandoffOrchestrationTests.cs
• Tests run: Handoffs_ToolApproval_AsAgentStreamingEmitsSingleRequestAsync (written, failed), Handoffs_TwoTransfers_SecondAgentUserApproval_ResponseServedByThirdAgentAsync (passed)
• Reported version: 1.19.0
• Current version: 1.19.0