nix log doesn't complete log files

[cgahr]

Description

When I use nix log /nix/store/<TAB>, I would like to complete files like /nix/store/<hash>-source-0.1.0.drv. Currently only folders are complete.

Reproduction steps

nix log /nix/store/<TAB> and try to get a *.drv log-file.

System

• nix-zsh-completions version: 6e782b9
• ZSH version: 5.9
• NIX_PATH: nixpkgs=flake:nixpkgs:/nix/var/nix/profiles/per-user/root/channels

system: `"x86_64-linux"`
host os: `Linux 6.6.21, NixOS, 24.05 (Uakari), 24.05.20240312.0ad13a6` multi-user?: `yes`
sandbox: `yes`
version: `nix-env (Nix) 2.18.1`
nixpkgs: `/nix/store/k5l01g2zwhysjyl5zjvg5zxnj0lyxpp1-source`