vtk: fix darwin build (#370945)

pkgs/top-level/all-packages.nix

···
     wine = wineWowPackages.staging;
   };
 
-  vtk_9 = libsForQt5.callPackage ../development/libraries/vtk/9.x.nix { };
+  vtk_9 = libsForQt5.callPackage ../development/libraries/vtk/9.x.nix {
+    stdenv = if stdenv.cc.isClang then llvmPackages_17.stdenv else stdenv;
+  };
 
   vtk_9_withQt5 = vtk_9.override { enableQt = true; };