busybox-sandbox-shell: use 64-bit numbers in `test` command
busybox-sandbox-shell: use 64-bit numbers in `test` command

The default is C int, which usually gives 32-bit even on 64-bit Linux.
This will be the right way to fix #110149 (but needs to be deployed).

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs