Braintrust - braintrust@1.x breaks `wrapAISDK` Tested with 0.4.8 and doesn't error out but is missing token metrics.

## The fix

[anthonyjgrove (reporter)]: Fixed in braintrust@1.1.0. If wrapAISDK throws "metric values must be numbers" / "failed to pipe response" when a stream finishes on braintrust@1.x, upgrade with npm install braintrust@^1.1.0. Confirmed fixed on v1.1.0 (v0.4.8 worked but was missing token metrics).

Thread: gh:braintrustdata/braintrust-sdk-javascript#1174