add root_span_id and span_id to the updateSpan log if they were exported#1323

john (j13huang) wants to merge 2 commits intomainbraintrustdata/braintrust-sdk-javascript:mainfrom

updateSpan-propagate-exported-idsbraintrustdata/braintrust-sdk-javascript:updateSpan-propagate-exported-idsCopy head branch name to clipboard