Rust: fix module names not showing in completion list (#13505)

This is a regression from
https://github.com/zed-industries/zed/issues/13043

Fixes https://github.com/zed-industries/zed/issues/13494



Release Notes:

- Fix crate names not being shown in Rust completions menu.
24e7b69f8fPiotr Osiewicz committed on 6/25/2024, 11:42:29 AM· committed by GitHubparenta4cdca5
1 file changedLine totals unavailable