🧑‍💻(user) fix the User.language

The use of a lazy function here make the Django migration
detector to generate a migration every time we run `makemigrations`.
This is not mandatory to have a lazy here as the settings are loaded
once at runtime beginning.
As the choices makes noop migrations, we directly use the setting in
the initial migration.

CHANGELOG.md

@@ -8,6 +8,10 @@ and this project adheres to
 
 ## [Unreleased]
 
+### Fixed
+
+- 🧑‍💻(user) fix the User.language infinite migration #611
+
 ## [1.9.1] - 2024-12-18
 
 ## [1.9.0] - 2024-12-17