feat(cli): compact build logs for native build deploys (#4817)

Native build server deploys (`--native-build`) now show compact build
logs by default: one spinner line updated with the latest message, and
the last 20 lines printed when the build fails. The previous timestamped
line-by-line output is behind `--build-logs full`, and is used
automatically in CI, with `--plain`, or when stdout is not a TTY.