posthog-v7.75.3

Patch changes

• a6ddc2e The LangChain callback handler now records $ai_http_status as an integer for failed generations. An error that carries a string code and no status code (such as OpenAI's rate_limit_exceeded) gave a string status; it now gives 0, as an error without a status already did. — Thanks @pcbeingused333 for your first contribution 🎉!
• 42c8b7b A non-streamed OpenAI chat completion that the model refused is no longer captured with an empty $ai_output_choices: the refusal text is recorded as a refusal content block, as it already is for streamed responses. — Thanks @pcbeingused333 for your first contribution 🎉!
• dc2a2b4 Streamed OpenAI, Anthropic and Gemini generations that raise mid-stream are now captured with $ai_is_error and $ai_error (and the error's status code as $ai_http_status) instead of being recorded as a successful 200. The error is still re-raised to the caller, matching what non-streaming calls already did. — Thanks @pcbeingused333 for your first contribution 🎉!