i18n(fr): complete & audit French translations

Rebased onto the i18n key cleanup (#1636): FR for the current 793-key set,
89 obsolete keys dropped, 9 newly-added source keys translated, plus the
Copilot fix (les reglages, lowercase after the article).

components/login/TVPasswordEntryModal.tsx

@@ -280,7 +280,7 @@ export const TVPasswordEntryModal: React.FC<TVPasswordEntryModalProps> = ({
               <View style={styles.buttonContainer}>
                 <TVSubmitButton
                   onPress={handleSubmit}
-                  label={t("login.login_button")}
+                  label={t("login.login")}
                   loading={isLoading}
                   disabled={!password}
                 />

translations/en.json

@@ -25,7 +25,8 @@
     "there_is_a_server_error": "There is a server error",
     "an_unexpected_error_occured_did_you_enter_the_correct_url": "An unexpected error occurred. Did you enter the server URL correctly?",
     "too_old_server_text": "Unsupported Jellyfin Server Discovered",
-    "too_old_server_description": "Please update Jellyfin to the latest version"
+    "too_old_server_description": "Please update Jellyfin to the latest version",
+    "login": "Log In"
   },
   "server": {
     "enter_url_to_jellyfin_server": "Enter the URL to your Jellyfin server",

translations/fr.json

@@ -25,7 +25,8 @@
     "there_is_a_server_error": "Une erreur de serveur est survenue",
     "an_unexpected_error_occured_did_you_enter_the_correct_url": "Une erreur inattendue s'est produite. Avez-vous correctement saisi l'URL du serveur ?",
     "too_old_server_text": "Serveur Jellyfin non pris en charge découvert",
-    "too_old_server_description": "Veuillez mettre à jour Jellyfin vers la dernière version"
+    "too_old_server_description": "Veuillez mettre à jour Jellyfin vers la dernière version",
+    "login": "Se connecter"
   },
   "server": {
     "enter_url_to_jellyfin_server": "Entrez l'URL de votre serveur Jellyfin",