fix(node): error when throwing FS_EISDIR (#23829)

The `EISDIR` error code is not available as a global variable, but must
be accessed through the `osConstants.errno` object.

Fixes #23695

ext/node/polyfills/internal/fs/utils.mjs

@@ -891,7 +891,7 @@ export const validateRmOptionsSync = hideStackFrames(
           message: "is a directory",
           path,
           syscall: "rm",
-          errno: EISDIR,
+          errno: osConstants.errno.EISDIR,
         });
       }
     }