UnsupportedQueryLaunched_TelemetryData: QueryBuilderTelemetryContext & TelemetryErrorFields

Payload for QUERY_BUILDER_EVENT.UNSUPPORTED_QUERY_LAUNCH, fired when the query lambda could not be built into the form-mode builder and the user fell through to the raw-lambda / unsupported-query editor. Carries the shared envelope + capped error dimensions so unsupported-lambda fallback is countable per entry point / GAV. The untruncated stack still goes to logService.error alongside, so the full error remains debuggable.