Python: [Bug]: A2AAgent inconsistent with BaseAgent: context_providers not triggered

[lixiaoqiang]

Description

A2AAgent currently does not use context_providers, nor does it trigger the invocation of the passed ContextProvider before the start and after the end of an Agent call.
This causes A2AAgent to violate the semantic definition of BaseAgent, resulting in inconsistency.

Code Sample

Error Messages / Stack Traces

Package Versions

agent-framework: 1.0.0rc4

Python Version

No response

Additional Context

No response

[FocusMode-coder]

Hey! I may be able to help with this bug.

I build custom fixes for Python projects and automation systems.

If you'd like help resolving this issue quickly feel free to reach out.

Happy to take a look 👍