libuv: disable test ipc_closed_handle

[arnoldfarkas]

Motivation for this change

Disabling unstable test case in libuv: it often times out, depending on infrastructure.
See libuv/libuv#2307 for further information

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Determined the impact on package closure size (by running nix path-info -S before and after)
• Ensured that relevant documentation is up to date
• Fits CONTRIBUTING.md.

[veprbl]

This doesn't fail on Hydra and it's a mass-rebuild, so, please, target staging branch instead of master.

[vcunat]

🤔 this actually seems interesting: libuv/libuv#2679 – perhaps it would allow us to enable many of the tests in nixpkgs again, though that doesn't seem an important aim to me...