Changes since langchain-core==0.3.86 chore(infra): merge v1.4 into master (#37350) chore: bump urllib3 from 2.6.3 to 2.7.0 in /libs/core (#37329) fix(core): avoid eager `pydantic.v1` import in `@deprecated` (#37308) chore: bump mistune from 3.1.4 to 3.2.1 in /libs/core (#37237) chore: bump jupyter-server from 2.17.0 to 2.18.0 in /libs/core (#37204) release(core): 1.3.3 (#37198) fix(core): set deprecation `since` to 1.3.3 to match release (#37200) fix(core, langchain): harden `load()` against untrusted manifests (#37197) chore: bump notebook from 7.5.0 to 7.5.6 in /libs/core (#37109) chore: bump types-pyyaml from 6.0.12.20250915 to 6.0.12.20260408 in /libs/core (#37129) fix(core): preserve structured `inputs` on tool runs in tracers (#37108) release(perplexity): 1.2.0 (#37091) chore(docs): update x handle references (#37081) fix(core): make `removal` optional in `warn_deprecated` (#37056) fix(core): validate batch_size in _batch and _abatch to prevent infinite loop (#36663) chore(core): mark stream_v2/astream_v2 as beta (#36992) release(core): 1.3.2 (#36990) feat(core): add content-block-centric streaming (v2) (#36834) release(core): 1.3.1 (#36972) feat(core): allow _format_output…