nohup: reduce unsafe

[oech3]

start #12110

[github-actions]

GNU testsuite comparison:

Congrats! The gnu test tests/seq/seq-epipe is no longer failing!
Note: The gnu test tests/cp/link-heap is now being skipped but was previously passing.
Note: The gnu test tests/env/env-signal-handler was skipped on 'main' but is now failing.
Skip an intermittent issue tests/pr/bounded-memory (was skipped on 'main', now failing)

[cakebaker]

Thanks!