[AI-72] LangGraph plugin samples #1162

Job	Run time
build-lint-test (3.10, macos-arm)	16m 20s
build-lint-test (3.10, macos-intel)	21m 31s
build-lint-test (3.10, ubuntu-latest)	13m 4s
build-lint-test (3.10, windows-latest)	21m 4s
build-lint-test (3.14, ubuntu-latest)	15m 38s
build-lint-test (3.14, windows-latest)	21m 57s
build-lint-test (3.14, macos-intel)	30m 51s
build-lint-test (3.14, macos-arm)	14m 12s
	2h 34m 37s

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