improve tracing for openai agents #830

Job	Run time
build-lint-test (3.10, windows-latest)	19s
build-lint-test (3.10, ubuntu-latest)	14s
build-lint-test (3.13, ubuntu-latest)	31s
build-lint-test (3.10, macos-intel)	24s
build-lint-test (3.10, macos-arm)	19s
build-lint-test (3.13, macos-intel)	37s
build-lint-test (3.13, windows-latest)	21s
build-lint-test (3.13, macos-arm)	35s
	3m 20s

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