libconfuse: fix tests on darwin

/cc ZHF #36454

(cherry picked from commit 1798563e62e32f4c07428bdae818d15cd3c8369e)

pkgs/development/libraries/libconfuse/default.nix

···
 
   enableParallelBuilding = true;
 
-  doCheck = true;
+  # On darwin the tests depend on the installed libraries because of install_name.
+  doInstallCheck = true;
+  installCheckTarget = "check";
 
   meta = with stdenv.lib; {
     inherit (src.meta) homepage;