lib/modules: pass specialArgs as a module argument

lib/modules.nix

@@ -127,7 +127,7 @@ rec {
         let collected = collectModules
           (specialArgs.modulesPath or "")
           (modules ++ [ internalModule ])
-          ({ inherit lib options config; } // specialArgs);
+          ({ inherit lib options config specialArgs; } // specialArgs);
         in mergeModules prefix (reverseList collected);
 
       options = merged.matchedOptions;