test: uv_tty_init now returns EINVAL on IBM i

Since the PR https://github.com/libuv/libuv/pull/2753
has been landed, we need to revert the code change in
PR https://github.com/nodejs/node/pull/32338.

PR-URL: https://github.com/nodejs/node/pull/33629


Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>