fix: alignment during flake show of legacyPackages
fix: alignment during flake show of legacyPackages

Fixes:
https://github.com/NixOS/nix/issues/6240
https://github.com/NixOS/nix/issues/6045

NixOS/nix,NixOS/nix,NixOS/nix,NixOS/nix,NixOS/nix