Windows-core incorrectly propagates the std feature to subcrates

[Intege-rs]

Summary

Windows-core always enables the std feature on Windows-strings and Windows-results

Crate manifest

[package]
name = "scratch"
version = "0.1.0"
edition = "2021"

[dependencies.windows]
version = "0.58.0"
default-features = false
features = []

Crate code

# build.rs
fn main() {
    println!("cargo:rustc-link-arg=/SubSystem:Console");
    println!("cargo:rustc-link-arg=/ENTRY:main");
}

# main.rs
#![no_std] #![no_main]

#[no_mangle]
extern "C" fn main() {
    // result incorrectly re-imports std into a no-std project
    let _ = windows::core::HRESULT(0);
}

// found duplicate lang item `panic_impl`
#[cfg_attr(not(test), panic_handler)]
fn _panic(_: &core::panic::PanicInfo) -> ! {
    loop {}
}

[kennykerr]

This repro does not appear to be resolved by #3164

[kennykerr]

I think I figured out how to test this - PR coming soon.

[kennykerr]

Thanks for reporting this issue! Testing revealed that there was a bit more involved in fixing this problem. #3180 provides the fix as well as the test repro and verification.