`imports_granularity=Item` incorrectly removes a `#[cfg]`'d item with same target as another `#[cfg]`'d item

Consider the following file (example.rs):

mod os {}

#[cfg(libloading_docs)]
use crate::os::unix as imp;
#[cfg(all(not(libloading_docs), unix))]   // <-- this will be removed
use crate::os::unix as imp;               // <-- and this as well
#[cfg(all(not(libloading_docs), windows))]
use crate::os::windows as imp;

pub fn use_the_imp() -> String {
    let my_instance = imp::MyStruct::new();
    my_instance.do_something().to_string()
}

Using the following rustfmt invocation:

rustfmt --config imports_granularity=Item example.rs

The final content is:

mod os {}

#[cfg(libloading_docs)]
use crate::os::unix as imp;
#[cfg(all(not(libloading_docs), windows))]
use crate::os::windows as imp;

pub fn use_the_imp() -> String {
    let my_instance = imp::MyStruct::new();
    my_instance.do_something().to_string()
}

which is not equivalent to the original one.

Rustfmt version:

❯ rustfmt --version
rustfmt 1.8.0-nightly (a1208bf765 2025-09-03)