[AI-72] LangGraph plugin samples #1158

Job	Run time
build-lint-test (3.10, windows-latest)	1m 46s
build-lint-test (3.10, macos-intel)	1m 53s
build-lint-test (3.10, ubuntu-latest)	1m 36s
build-lint-test (3.14, ubuntu-latest)	1m 44s
build-lint-test (3.14, macos-intel)	2m 1s
build-lint-test (3.10, macos-arm)	1m 55s
build-lint-test (3.14, windows-latest)	1m 45s
build-lint-test (3.14, macos-arm)	1m 56s
	14m 36s

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