tail: handle broken pipe gracefully

[tgrez]

Fixes #4965.

The original issue can be reproduced with:
Edit: I misunderstood #4965, but it's related.

The incorrect handling of broken pipe can be reproduced with:

$ echo "oneline" > file
$ tail file | false
$
$ coreutils tail file | false
tail: Broken pipe
$

[github-actions]

GNU testsuite comparison:

Skipping an intermittent issue tests/timeout/timeout (passes in this run but fails in the 'main' branch)

[cakebaker]

Nice little change :)

[cakebaker]

Thanks!