`sudo --login` not working on Arch Linux

Describe the bug
Whenever I try to use the --login option I instantly get an AuthError. No password prompt is shown.
This is on Arch Linux on Windows Subsystem for Linux on Windows 11.

To Reproduce

1. Setup Arch linux on WSL2 and login as root
2. Download and extract rust-rs:

pacman -S --needed wget # Install wget
wget https://github.com/memorysafety/sudo-rs/releases/download/v0.2.2/sudo-0.2.2.tar.gz
tar xf sudo-0.2.2.tar.gz --strip-components=1 bin/sudo

3. Reproduce the error:

# ./sudo --login echo hello
sudo-rs: PAM error: PAM returned an error (AuthError): Authentication failure

Expected behavior
Either receive a password prompt, OR execute echo hello.

Environment:

• Linux distribution: Arch Linux on WSL on Win11.
• sudo-rs commit hash: f317145 (Version 0.2.2)
  (I also tried with a manual compile of master (ebd3e60) and got the same error.

Additional context
No additional context.

Start with the sudo --login entry point and the PAM authentication path, then run the Arch Linux on WSL2 reproduction from the issue. Done means ./sudo --login echo hello either prompts for a password or executes echo hello instead of returning AuthError.