improve tracing for openai agents #780

Job	Run time
build-lint-test (3.9, windows-latest)	5m 57s
build-lint-test (3.9, ubuntu-latest)	5m 15s
build-lint-test (3.12, macos-intel)	6m 1s
build-lint-test (3.9, macos-arm)	6m 46s
build-lint-test (3.12, windows-latest)	6m 9s
build-lint-test (3.9, macos-intel)	7m 59s
build-lint-test (3.12, macos-arm)	7m 17s
build-lint-test (3.12, ubuntu-latest)	5m 27s
	50m 51s

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