pkgs.atuin: skip filtered_commands_leave_no_captured_output on darwin
atuin 18.23.0 fails this e2e test in unsandboxed darwin builds: the test
shell reads nix-darwin's /etc/bashrc, which resets PATH so the atuin
under test is not used. Fixed in nixpkgs by NixOS/nixpkgs#574509
(NOSYSBASHRC in preCheck); drop this package once our nixpkgs pin
includes it. Linux keeps the unmodified nixpkgs derivation.