Datasets v2 resource; anonymizer fixes; projects resource accessor

What's Changed

• fix(google_adk): capture LLM inputs after before_model_callback runs [LSDK-279] by @harisaiharish in https://github.com/langchain-ai/langsmith-sdk/pull/3094
• release(js): bump js sdk version to 0.7.13 by @langchain-infra in https://github.com/langchain-ai/langsmith-sdk/pull/3104
• chore: sync langsmith_api by @langtions-bot[bot] in https://github.com/langchain-ai/langsmith-sdk/pull/3105
• doc: improve resource comments by @QuentinBrosse in https://github.com/langchain-ai/langsmith-sdk/pull/3108
• fix(client): apply anonymizer to run error field by @paarth-a in https://github.com/langchain-ai/langsmith-sdk/pull/3100
• feat(client): expose datasets v2 resource + experiment-runs integration tests [langchainplus#28358] by @GowriH-1 in https://github.com/langchain-ai/langsmith-sdk/pull/3106
• fix(google-adk): set tool span as active tracing context in wrap_tool_run_async by @navarra-lisandro in https://github.com/langchain-ai/langsmith-sdk/pull/3111
• fix(client): apply anonymizer to run error field (JS) by @paarth-a in https://github.com/langchain-ai/langsmith-sdk/pull/3110
• fix(python): use current project issues endpoint by @khankaholic in https://github.com/langchain-ai/langsmith-sdk/pull/3064
• chore: sync langsmith_api by @langtions-bot[bot] in https://github.com/langchain-ai/langsmith-sdk/pull/3120
• fix(js): Avoid setting usage_metadata on parent chain runs for Claude Agent SDK runs by @jacoblee93 in https://github.com/langchain-ai/langsmith-sdk/pull/3119
• feat(client): expose projects resource accessor on Python and JS clients by @KiewanVillatel in https://github.com/langchain-ai/langsmith-sdk/pull/3109
• release(js): bump to 0.7.14 by @dqbd in https://github.com/langchain-ai/langsmith-sdk/pull/3121
• release(python): bump py version to 0.9.4 by @KiewanVillatel in https://github.com/langchain-ai/langsmith-sdk/pull/3124

New Contributors

• @navarra-lisandro made their first contribution in https://github.com/langchain-ai/langsmith-sdk/pull/3111
• @khankaholic made their first contribution in https://github.com/langchain-ai/langsmith-sdk/pull/3064

Full Changelog: https://github.com/langchain-ai/langsmith-sdk/compare/v0.9.3...v0.9.4