Cover by tests Py_Universalnewlinefgets as mentioned at [TODO](https://github.com/python/cpython/blob/c0661df42ad20e488dbfa3e0fec22462833fc3d6/Lib/test/test_capi/test_file.py#L297) <!-- gh-linked-prs --> ### Linked PRs * gh-132164 <!-- /gh-linked-prs -->
