fix(ai): capture tool calls in reasoning models (#587)

* fix(ai): capture tool calls in reasoning models

* chore: Bump version

* Update posthog-ai/src/langchain/callbacks.ts

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>

* chore: Prettify everything

* Reduce bundle size by changing imports

* Revert back to a switch

---------

Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>