[openai-agents] Populate instructions and tool definitions from Response obj

[adammw]

Description

Populate system instructions and tool definitions attributes from Response obj

Fixes #4188

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

• Updated test_tracer.py with mocked unit tests
• Manually tested with OpenAI Agents SDK sample code, confirmed attributes present

Does This PR Require a Core Repo Change?

• Yes. - Link to PR:
• No.

Checklist:

See contributing.md for styleguide, changelog guidelines, and more.

• Followed the style guidelines of this project
• Changelogs have been updated
• Unit tests have been added
• Documentation has been updated

[tammy-baylis-swi]

Thanks for contributing!

I think the agent tests for oldest should still pass (tox -e py3*-test-instrumentation-openai_agents-v2-oldest for each Python version); please take a look.

Please also do tox -e precommit to address formating-etc issues.

[adammw]

PR Updated

[tammy-baylis-swi]

Great thanks! Another housekeeping: please could you update CHANGELOG.md with this PR url?

[tammy-baylis-swi]

Thanks again! This lgtm though I haven't worked on this particular instrumentor much. The Maintainers will have to review anyway.