fix(uucore): fix build failure

Author: xtqqczze

src/uucore/src/lib/features/pipes.rs

@@ -7,7 +7,7 @@
 
 #[cfg(any(target_os = "linux", target_os = "android"))]
 use rustix::pipe::{SpliceFlags, fcntl_setpipe_size};
-#[cfg(any(target_os = "linux", target_os = "android"))]
+#[cfg(any(target_os = "linux", target_os = "android", test))]
 use std::fs::File;
 #[cfg(any(target_os = "linux", target_os = "android"))]
 use std::os::fd::AsFd;