fix(ai): populate RUN_ERROR rawEvent with provider error body (#672)#673

tombeckenham merged 4 commits into

mainTanStack/ai:mainfrom

672-stream-adapters-collapse-provider-errors-to-message-code-and-never-populate-ag-ui-rawevent-upstream-error-detail-is-unrecoverableTanStack/ai:672-stream-adapters-collapse-provider-errors-to-message-code-and-never-populate-ag-ui-rawevent-upstream-error-detail-is-unrecoverableCopy head branch name to clipboard