plugins/claude-code: don't test on darwin

Currently failing on our CI, for some reason.

tests/test-sources/modules/dependencies.nix

@@ -9,6 +9,9 @@ let
   disabledDeps = lib.optionals hostPlatform.isDarwin [
     # One of its dependencies is not available on darwin
     "fontpreview"
+
+    # TODO: Failing to compile on darwin CI atm
+    "claude-code"
   ];
 
   isDepEnabled =

tests/test-sources/plugins/by-name/claude-code/default.nix

@@ -1,4 +1,6 @@
-{
+{ pkgs, ... }:
+# TODO: Failing to compile on darwin CI atm
+pkgs.lib.optionalAttrs (!pkgs.stdenv.isDarwin) {
   empty = {
     plugins.claude-code.enable = true;
   };