perlPackages.PerlTidy: use shortenPerlShebang on darwin

The shebang must be shortened to make the executable work on macOS.

pkgs/top-level/perl-packages.nix

@@ -16630,6 +16630,10 @@ let
       description = "Indent and reformat perl scripts";
       license = lib.licenses.gpl2Plus;
     };
+    nativeBuildInputs = lib.optional stdenv.isDarwin shortenPerlShebang;
+    postInstall = lib.optionalString stdenv.isDarwin ''
+      shortenPerlShebang $out/bin/perltidy
+    '';
   };
 
   PHPSerialization = buildPerlPackage {