Until Drupal 8.7, we had a drush command that was very useful for developing content entities, and updating them as they evolved with the project. This command, drush entup or drush entity-updates, allowed us to update the definition of the entities and/or their fields.
It is not uncommon when a multilingual Drupal 8 project is implemented, that the pages translations are not ready at the time of production. If making a Drupal 8 multilingual site has become really easy to implement, there is now a fundamental difference with Drupal 7: it is impossible to disable a language. Either install a language, or delete it. This change is assumed, and voluntary, so as to not generate unnecessary complexity for questionable gain.