Python: [Bug]: HandoffBuilder ignores context_provider due to parameter name mismatch in agent cloning

[jdanielrq]

Description

What happened?

When using HandoffBuilder with agents that have a context_provider configured, the context provider is silently ignored during the workflow execution. The issue occurs in the agent cloning logic at line 315 of python/packages/orchestrations/agent_framework_orchestrations/_handoff.py in the HandoffAgentExecutor._clone_chat_agent() method.

The code incorrectly uses context_providers= (plural) when passing the context provider to the cloned ChatAgent, but the ChatAgent constructor expects context_provider= (singular).

What did you expect to happen?

When a ChatAgent is created with a context_provider and passed to HandoffBuilder, the context provider should be preserved and function correctly throughout the handoff workflow. The cloned agents should maintain the same context provider as the original agent.

Steps to reproduce the issue

1. Create a ChatAgent with a context_provider (e.g., memory provider, RAG provider)
2. Pass the agent to HandoffBuilder using .participants() or register_participants()
3. Build and run the workflow
4. Observe that the context provider functionality is not working (e.g., memory not being retrieved, RAG not being used)

Code Sample

import asyncio
from agent_framework import ChatAgent, Context, ContextProvider, HandoffBuilder
from agent_framework.azure import AzureOpenAIChatClient
from azure.identity import AzureCliCredential

# Create custom context provider
class SimpleContextProvider(ContextProvider):
    def __init__(self):
        self.called = False
    
    async def invoking(self, messages, **kwargs):
        self.called = True
        return Context(instructions="User name is John.")


async def run():
    client = AzureOpenAIChatClient(credential=AzureCliCredential())
    mem_provider = SimpleContextProvider()

    # Create agent with context provider
    agent = ChatAgent(
        name="test_agent",
        chat_client=client,
        instructions="You are an assistant.",
        context_provider=mem_provider
    )
    
    workflow = HandoffBuilder(participants=[agent]).with_start_agent(agent).build()
    
    # Run workflow - context provider is not used
    async for event in workflow.run_stream("What is my name?"):
        if hasattr(event, 'data') and hasattr(event.data, 'text'):
            print(event.data.text, end='', flush=True)
    
    print(f"\n\nContext provider called: {mem_provider.called}")


asyncio.run(run())

Bug location:
File: python/packages/orchestrations/agent_framework_orchestrations/_handoff.py
Line: 315

Current code (incorrect, context_providers parameter was renamed in PR #3139 ):

return ChatAgent(
    chat_client=agent.chat_client,
    id=agent.id,
    name=agent.name,
    description=agent.description,
    chat_message_store_factory=agent.chat_message_store_factory,
    context_providers=agent.context_provider,  
    middleware=middleware,
    default_options=cloned_options,
)

Error Messages / Stack Traces

No error is raised. This is a silent failure, the incorrect parameter name causes the context provider to be ignored without any warning, making the issue difficult to debug.

Package Versions

agent-framework-core: 1.0.0b260130

Python Version

Python 3.12.10

Additional Context

No response