WTH is there no way of specifying locale when casting lovelace

When casting a lovelace dashboard - for example to a Google Nest Hub - the locale/regional settings of the casted lovelace dashboard seems to default to US and I have not found a way to specify the locale/regional settings for the casted content.

  alias: Cast Home Assistant to Nest Hub
    - service: cast.show_lovelace_view
        dashboard_path: lovelace-hub
        view_path: home
        entity_id: media_player.nesthubxxxx