langchain: support the situation when action_input is null in json output_parser #37432

Job	Run time
build	14s
cd libs/langchain / make extended_tests #3.9	28s
test-doc-imports	0s
cd libs/langchain / make extended_tests #3.13	26s
cd libs/community / make extended_tests #3.9	29s
cd libs/community / make extended_tests #3.12	28s
cd libs/community / make lint #3.13	28s
cd libs/community / make lint #3.9	27s
cd libs/langchain / make lint #3.13	28s
cd libs/langchain / make lint #3.9	28s
cd libs/community / make test #3.13	17s
cd libs/community / make test #3.9	27s
cd libs/langchain / make test #3.13	18s
cd libs/community / uv run pytest -m compile tests/integration_tests #3.11	27s
cd libs/community / uv run pytest -m compile tests/integration_tests #3.9	19s
cd libs/langchain / make test #3.9	14s
cd libs/langchain / uv run pytest -m compile tests/integration_tests #3.13	16s
cd libs/langchain / uv run pytest -m compile tests/integration_tests #3.9	18s
cd libs/community / make test # pydantic: ~=2.10.0, python: 3.11,	26s
cd libs/community / make test # pydantic: ~=2.7.0, python: 3.11,	26s
cd libs/community / make test # pydantic: ~=2.8.0, python: 3.11,	27s
cd libs/community / make test # pydantic: ~=2.9.0, python: 3.11,	13s
cd libs/langchain / make test # pydantic: ~=2.10.0, python: 3.11,	13s
cd libs/langchain / make test # pydantic: ~=2.7.0, python: 3.11,	14s
cd libs/langchain / make test # pydantic: ~=2.8.0, python: 3.11,	13s
cd libs/langchain / make test # pydantic: ~=2.9.0, python: 3.11,	23s
CI Success	1s
	9m 8s

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