community: add PanelCallbackHandler #33192

Job	Run time
build	11s
cd libs/community / make extended_tests #3.9	1m 37s
cd libs/community / make extended_tests #3.11	1m 26s
cd libs/langchain / make extended_tests #3.9	33s
cd libs/langchain / make extended_tests #3.11	35s
cd libs/community / poetry run pytest -m compile tests/integration_tests #3.11	48s
cd libs/community / poetry run pytest -m compile tests/integration_tests #3.9	40s
cd libs/langchain / poetry run pytest -m compile tests/integration_tests #3.13	28s
cd libs/langchain / poetry run pytest -m compile tests/integration_tests #3.9	22s
cd . / make lint #3.12	1m 14s
cd . / make lint #3.9	1m 3s
cd libs/community / make lint #3.13	2m 25s
cd libs/community / make lint #3.9	18s
cd libs/langchain / make lint #3.13	45s
cd libs/langchain / make lint #3.9	34s
cd libs/community / make test #3.13	3m 20s
cd libs/community / make test #3.9	1m 4s
cd libs/langchain / make test #3.13	2m 38s
cd libs/langchain / make test #3.9	31s
test-doc-imports (3.12) / check doc imports #3.12	1m 4s
cd libs/community / make test # pydantic: ~=2.7.0, python: 3.11,	47s
cd libs/community / make test # pydantic: ~=2.8.0, python: 3.11,	49s
cd libs/community / make test # pydantic: ~=2.9.0, python: 3.11,	44s
cd libs/langchain / make test # pydantic: ~=2.7.0, python: 3.11,	34s
cd libs/langchain / make test # pydantic: ~=2.8.0, python: 3.11,	33s
cd libs/langchain / make test # pydantic: ~=2.9.0, python: 3.11,	37s
CI Success	1s
	25m 41s

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