Fixes#21189
`.pause()` should unref but it should still continue to emit `readable`
events (although it should not send `data` events)
also stdin.unref() should not pause input, it should only prevent stdin
from keeping the process alive.
DRAFT:
- [x] ~~this causes a bug where `process.stdin.on("readable", () => {});
process.stdin.pause()` will allow the process to exit when it
shouldn't.~~ fixed
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Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
