Commit 733cb1e64 breaks `imports.preferNoStd`

[traviscross]

Commit 733cb1e ("Optimize find_path for sysroot library search some more") breaks the rust-analyzer.imports.preferNoStd behavior.

That is, with that option set, and that commit applied, writing:

fn main() {
    let _ = Pin<tab><enter>
}

...produces:

use std::pin::Pin;

fn main() {
    let _ = Pin
}

...rather than:

use core::pin::Pin;

fn main() {
    let _ = Pin
}

The commit reverts cleanly, and reverting the commit on master fixes the behavior.

cc @Veykril

[Veykril]

Given #![no_std] in a crate makes it work it looks like the config is not being honored to me for some reason No there seems other issue at play