fix: handle initial null translator settings

Author: CoderUni

lib/main_production.dart

@@ -12,7 +12,7 @@ Future<void> main() async {
   await SentryFlutter.init(
     (options) {
       options
-        ..environment = 'development'
+        ..environment = 'production'
         ..tracesSampleRate = 1.0
         ..dsn = dotenv.env['sentryLink'];
     },

lib/presentation/settings/models/translator_details.dart

@@ -16,8 +16,8 @@ typedef TranslatorApiKeys = Map<String, String>;
 @freezed
 abstract class TranslatorSettings with _$TranslatorSettings {
   factory TranslatorSettings({
-    required List<Translator> enabledTranslators,
-    required TranslatorApiKeys apiKeys,
+    @Default(<Translator>[]) List<Translator> enabledTranslators,
+    @Default(<String, String>{}) TranslatorApiKeys apiKeys,
   }) = _TranslatorDetails;
 
   factory TranslatorSettings.fromJson(Map<String, dynamic> json) =>

lib/presentation/settings/models/translator_details.freezed.dart

@@ -9,12 +9,13 @@ final class SettingsRepository {
   final FlutterSecureStorage storage;
 
   // Get the translator API key from the secure storage
-  Future<TranslatorSettings?> getAPIKey() async {
+  Future<TranslatorSettings> getAPIKey() async {
     try {
       final data = await storage.read(key: KeyNameConstants.translator);
 
       if (data == null || data.isEmpty) {
-        return null;
+        // Returns empty translator settings if no data is found
+        return TranslatorSettings();
       }
 
       return TranslatorSettings.fromJson(