fix(User): adjust preferredLanguage type [UFO-1659] (#2897)

Author: cf-remylenoir

lib/entities/user.ts

@@ -50,9 +50,8 @@ export type UserProps = {
   /**
    * Language used in the interface and email communications.
    * Overrides the organization default language.
-   * If not set, the default value is `en-US`.
    */
-  preferredLanguage: string
+  preferredLanguage: string | null
 }
 
 export interface User extends UserProps, DefaultElements<UserProps> {}

test/unit/mocks/entities.ts

@@ -208,7 +208,7 @@ const userMock: UserProps = {
   confirmed: true,
   '2faEnabled': true,
   cookieConsentData: 'mocked',
-  preferredLanguage: 'en-US',
+  preferredLanguage: null,
 }
 
 const personalAccessTokenMock: PersonalAccessTokenProps = {