.NET: [CI] DurableTask WorkflowConsoleAppSamplesValidation tests fail — KeyNotFoundException in workflow execution #6404

Summary

4 tests in WorkflowConsoleAppSamplesValidation (DurableTask.IntegrationTests) fail with KeyNotFoundException during workflow execution. The console app samples build and start successfully but error during orchestration.

Failure signature

Error: The given key was not present in the dictionary.

The error occurs inside the running workflow (not at startup). The test helper AssertNoError (line 181) catches it from stdout.

Affected tests

• WorkflowEventsSampleValidationAsync (sample: 05_WorkflowEvents)
• WorkflowSharedStateSampleValidationAsync
• SubWorkflowsSampleValidationAsync
• WorkflowHITLSampleValidationAsync

Example failing run

https://github.com/microsoft/agent-framework/actions/runs/27167303185/job/80197825419

Context

Observed on PR #6381 (.NET GitHub Copilot SDK v1.0.0 migration) which modifies Directory.Packages.props. The package version change may have caused a transitive dependency issue affecting workflow executor resolution, or this may be a pre-existing flaky test.

Mitigation

Tests are temporarily skipped pending investigation.