Add test recordings to previously-skipped Agent tracing tests

[dargilco]

All Agent telemetry tests now have recordings, nothing is skipped:

tests\agents\telemetry\test_ai_agents_instrumentor.py .....................                                                                                                                                                                                                         [  7%]
tests\agents\telemetry\test_ai_agents_instrumentor_async.py ........                                                                                                                                                                                                                [ 10%]
tests\agents\telemetry\test_responses_instrumentor.py ............................................................                                                                                                                                                                  [ 31%]
tests\agents\telemetry\test_responses_instrumentor_async.py ..................................                                                                                                                                                                                      [ 43%]
tests\agents\telemetry\test_responses_instrumentor_metrics.py .....            

[Copilot]

Pull request overview

This PR enables 12 previously-skipped Agent tracing tests by adding test recordings and configuring appropriate transport mechanisms for recording. The tests were skipped because recordings were not working for the responses API, but that issue has now been resolved. The PR updates both synchronous and asynchronous test files to enable function tool and workflow agent tests with and without content recording.

Key changes:

• Un-skipped 12 tests (6 in each test file) by commenting out @pytest.mark.skip decorators
• Added dual transport configuration (RecordedTransport.AZURE_CORE, RecordedTransport.HTTPX) to @recorded_by_proxy decorators for tests that use both Azure AI Projects agents API and OpenAI responses API
• Updated test assets tag to reference newly recorded test data

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
sdk/ai/azure-ai-projects/tests/agents/telemetry/test_responses_instrumentor_async.py	Enabled 6 async tests (4 function tool tests + 4 workflow agent tests) by removing skip markers and adding dual transport recording support
sdk/ai/azure-ai-projects/tests/agents/telemetry/test_responses_instrumentor.py	Enabled 6 sync tests (4 function tool tests + 4 workflow agent tests) by removing skip markers and adding dual transport recording support
sdk/ai/azure-ai-projects/assets.json	Updated test assets tag to point to new recordings for the newly enabled tests