which test playing has not conceeded a single hattrick in test matches?

This question asks which test-playing nation has NOT conceded a hat-trick. As of the early 2020s, India had never conceded a Test hat-trick (though this changed in 2024 when India conceded one to New Zealand). The question appears to be from when India was the only test nation without this record. The other nations have all conceded hat-tricks.