with other voice/llm providers vapi can often detect if there is an issue, which will result in an endedReason: pipeline-error-openai-llm-error for example. When using cartesia we don't seem to be getting these pipeline error messages. The voice is just silent on the call. If we had the pipeline error detection for cartesia, we could set up our own notifications for emergency swapping providers, or setup a fallbackForwardingPhoneNumber