MT support for Khmer has been added to Yandex recently. Add non-default MT support for it.
Related Gerrit Patches:
|mediawiki/services/cxserver : master||Add non-default MT support for Burmese, Khmer and Lao|
|Open||None||T76456 Language Engineering tracker of trackers (tracking)|
|Open||None||T76454 [Epic] ContentTranslation - MT support|
|Open||None||T86700 Add more machine translation services (tracking)|
|Resolved||KartikMistry||T162862 Add MT support for Khmer|