nodePackages_0_5: don't recurseIntoAttrs

Two reasons for this change:

- most of 5.0 packages don't build yet

- node packages are memory intensive and block Hydra evaluation
  (Too many heap sections: Increase MAXHINCR or MAX_HEAP_SECTS)

PS: Removing node packages from evaluation goes from 7.5G down to
4.6G for whole nixos release job.

See #3594 and #11865