Python: Fix workflow samples for bugbash: part 1

[TaoChenOSU]

Motivation and Context

Fix workflow samples

Description

Contribution Checklist

• The code builds clean without any errors or warnings
• The PR follows the Contribution Guidelines
• All unit tests pass, and I have added new tests where possible
• Is this a breaking change? If yes, add "[BREAKING]" prefix to the title of the PR.

[Copilot]

Pull request overview

This pull request fixes various issues in workflow samples discovered during a bugbash, focusing on correcting parameters, improving comments, fixing paths, refactoring event handling logic, and adding test coverage for middleware functionality.

Changes:

• Fixed parameter names and configuration values in workflow agent samples
• Corrected file system path calculation for workflow loading
• Refactored human-in-the-loop event handling patterns
• Added test coverage for handoff middleware functionality
• Updated comments and documentation to match actual workflow behavior

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
python/samples/03-workflows/tool-approval/group_chat_builder_tool_approval.py	Updated max_rounds from 4 to 2 and revised comments to explain the rationale for preventing empty message errors
python/samples/03-workflows/orchestrations/magentic.py	Added blank line for formatting consistency
python/samples/03-workflows/human-in-the-loop/agents_with_HITL.py	Corrected sample description from "AzureOpenAI Chat Agents" to "Azure AI Agents"
python/samples/03-workflows/declarative/human_in_loop/main.py	Refactored event handling to properly check event type before casting ExternalInputRequest
python/samples/03-workflows/declarative/deep_research/main.py	Fixed path calculation by removing one extra parent level (was going outside repo root)
python/samples/03-workflows/control-flow/workflow_cancellation.py	Changed asyncio.create_task to asyncio.ensure_future and reformatted workflow builder chain
python/samples/03-workflows/agents/workflow_as_agent_human_in_the_loop.py	Fixed Worker parameter from chat_client to client and changed feedback value from "Approved" to empty string
python/samples/03-workflows/agents/concurrent_workflow_as_agent.py	Removed unused clear_and_redraw function
python/samples/03-workflows/agents/azure_chat_agents_tool_calls_with_feedback.py	Refactored to add AsyncIterable import, remove unused AgentResponseUpdate, simplify event handling with consume_stream helper, and fix workflow run loop logic
python/packages/orchestrations/tests/test_handoff.py	Added imports and two new test cases for auto handoff middleware behavior
python/packages/orchestrations/agent_framework_orchestrations/_handoff.py	Fixed handoff middleware to properly parse function results using FunctionTool.parse_result

[markwallace-microsoft]

Python Test Coverage Report •

File	Stmts	Miss	Cover	Missing
packages/orchestrations/agent_framework_orchestrations
_handoff.py	339	58	82%	105–106, 108, 163–173, 175, 177, 179, 184, 282, 335, 360, 388, 396–397, 411, 462–463, 495, 501, 505, 509–510, 548–550, 555–557, 673, 676, 683, 688, 750, 755, 762, 772, 774, 793, 795, 877–878, 910–911, 993, 1000, 1072–1073, 1075
TOTAL	21209	3331	84%

Python Unit Test Overview

Tests	Skipped	Failures	Errors	Time
4178	239 💤	0 ❌	0 🔥	1m 16s ⏱️