Python: Fixed AutoGen migration and tool samples

[dmytrostruk]

Motivation and Context

• Fixed orchestration streaming to use executor_completed events for SequentialBuilder and GroupChatBuilder output
• Fixed AutoGen agent.run(stream=True) calls to use agent.run_stream()
• Fixed swarm sample: wrong import (orderedmultidict → typing) and response type mismatch for handoff responses
• Fixed Ollama samples to pass list[Message] to get_response() instead of plain strings
• Fixed session injection sample to use additional_function_arguments workaround
• Added AzureCliCredential to approval-with-sessions sample
• Removed internal file paths from expected output in tool samples

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 PR fixes various issues in Python samples related to AutoGen migration, tool usage, and provider integrations. The changes address API misuse, type mismatches, and clean up output formatting.

Changes:

• Fixed AutoGen streaming API calls to use run_stream() instead of run(stream=True)
• Fixed orchestration streaming to use executor_completed events instead of output events for SequentialBuilder and GroupChatBuilder
• Fixed swarm sample import and response type handling for handoff workflows
• Fixed Ollama samples to pass list[Message] instead of strings to get_response()
• Fixed session injection sample to use additional_function_arguments workaround
• Added AzureCliCredential to approval-with-sessions sample
• Removed internal file paths from tool sample expected outputs

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
python/samples/autogen-migration/single_agent/04_agent_as_tool.py	Changed run(stream=True) to run_stream() for AutoGen API consistency
python/samples/autogen-migration/single_agent/03_assistant_agent_thread_and_stream.py	Changed run(stream=True) to run_stream() for AutoGen API consistency
python/samples/autogen-migration/orchestrations/03_swarm.py	Fixed import (orderedmultidict → typing) and wrapped user responses with HandoffAgentUserRequest.create_response()
python/samples/autogen-migration/orchestrations/02_selector_group_chat.py	Fixed streaming to use executor_completed events with list iteration instead of individual output events
python/samples/autogen-migration/orchestrations/01_round_robin_group_chat.py	Fixed streaming to use executor_completed events with list iteration instead of individual output events
python/samples/04-hosting/azure_functions/12_workflow_hitl/function_app.py	Sorted imports alphabetically (moved Message before Executor)
python/samples/02-agents/tools/tool_in_class.py	Removed internal file path from expected output in comment
python/samples/02-agents/tools/function_tool_with_session_injection.py	Added additional_function_arguments workaround to pass session to tools via kwargs
python/samples/02-agents/tools/function_tool_with_max_invocations.py	Removed internal file path from expected output in comment
python/samples/02-agents/tools/function_tool_with_max_exceptions.py	Removed internal file paths from expected output in comment
python/samples/02-agents/tools/function_tool_with_approval_and_sessions.py	Added AzureCliCredential() to AzureOpenAIChatClient initialization
python/samples/02-agents/providers/ollama/ollama_chat_multimodal.py	Changed get_response(message) to get_response([message]) to match API signature
python/samples/02-agents/providers/ollama/ollama_chat_client.py	Added Message import and changed get_response() calls to accept list[Message] instead of strings