Wikipedia in these languages exists now, but they are missing from interwiki sort orders. On meta.wikimedia.org Interwiki_config-sorting_order* system messages have been modified to include these, but this apparently no longer has an effect on actual sort orders.
Patch for review:
Note: Someone might want to update this page as well so that it'd reflect where interwiki sorting order for Wikimedia projects is configured these days. (I don't know if this page is entirely outdated or whether it still applys to some extent for e.g. use by bots.)