Enatega Customer Application (App Language)

Is your feature request related to a problem? Please describe.
The application is asking for a specific language to select and when the user does that, the whole application gets reloaded.

Describe the solution you'd like
the application should be able to picked the language the system is already using and make it its default language.

Start in the customer application’s language-selection and initialization flow; the issue does not name specific files or tests. Check how the app detects the system language and what triggers the reload, then verify that the detected language becomes the default without an unnecessary full application reload.

Written by the indexing model from the issue text.