Set Right-to-Left Language Layout

This parameter is included in your generated code snippet and set to English for versions 5.0 and later. To enable right-to-left layout enhancements in Chat, set the two-letter value to the supported language in your code snippet.

embedded_svc.settings.language = ".."

There are other settings to take care of to make sure that translation works properly. Use the Salesforce Help for guidance.