[AI-72] LangGraph plugin samples #1196

Job	Run time
build-lint-test (3.14, macos-intel)	11m 34s
build-lint-test (3.10, windows-latest)	7m 6s
build-lint-test (3.10, macos-intel)	10m 5s
build-lint-test (3.14, ubuntu-latest)	9m 23s
build-lint-test (3.14, macos-arm)	8m 3s
build-lint-test (3.10, ubuntu-latest)	6m 6s
build-lint-test (3.14, windows-latest)	10m 58s
build-lint-test (3.10, macos-arm)	6m 26s
	1h 9m 41s

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