head: "writes" to /dev/full without error but shouldn't

Environment: Ubuntu 20.04, `main` branch (git commit dddbc17c592554186cce5d029111e19225a8e04f), GNU coreutils v9.5.218-7e5b6

What happens now: uutils head:
```
$ echo abc | ./target/debug/head > /dev/full
```
(it terminates with no error message and exit status 0)

What I expected to happen: GNU head:
```
$ echo abc | head > /dev/full
head: write error: No space left on device
```