Chinese language-based countries do not include zho in translations

[catielanier]

Expected behaviour

• Countries whose native language is Chinese should have zho appear in translations like other countries have their native languages appear within the translations array

Actual behaviour

• Countries whose native language is Chinese omits zho from the translations array.

Replicate

• Search for South Korea or North Korea in the API.
  • Notice that kor appears in the translations array, despite both countries' native language being Korean.
• Search for Taiwan, Hong Kong, Macau, or People's Republic of China in the API.
  • Notice that zho does not appear in the translations array. The last language, alphabetically, that appears in the array is urd.

[mledoze]

This has been fixed in #498