fix(l10n): Update Korean language code from 'kr' to 'ko'

l10n.yaml

@@ -12,4 +12,4 @@ preferred-supported-locales:
   - ru
   - nl
   - es
-  - kr
+  - ko

lib/features/profile/views/app_customization_page.dart

@@ -1669,7 +1669,7 @@ class AppCustomizationPage extends ConsumerWidget {
         return AppLocalizations.of(context)!.russian;
       case 'zh':
         return AppLocalizations.of(context)!.chinese;
-      case 'kr':
+      case 'ko':
         return AppLocalizations.of(context)!.korean;
       default:
         return AppLocalizations.of(context)!.system;
@@ -1905,8 +1905,8 @@ class AppCustomizationPage extends ConsumerWidget {
               ),
               ListTile(
                 title: Text(AppLocalizations.of(context)!.korean),
-                trailing: current == 'kr' ? const Icon(Icons.check) : null,
-                onTap: () => Navigator.pop(context, 'kr'),
+                trailing: current == 'ko' ? const Icon(Icons.check) : null,
+                onTap: () => Navigator.pop(context, 'ko'),
               ),
               const SizedBox(height: Spacing.sm),
             ],

lib/l10n/app_ko.arb

@@ -1,5 +1,5 @@
 {
-  "@@locale": "kr",
+  "@@locale": "ko",
   "appTitle": "Conduit",
   "retry": "다시 시도",
   "back": "뒤로",

lib/l10n/app_localizations.dart

@@ -10,7 +10,7 @@ import 'app_localizations_en.dart';
 import 'app_localizations_es.dart';
 import 'app_localizations_fr.dart';
 import 'app_localizations_it.dart';
-import 'app_localizations_kr.dart';
+import 'app_localizations_ko.dart';
 import 'app_localizations_nl.dart';
 import 'app_localizations_ru.dart';
 import 'app_localizations_zh.dart';
@@ -109,7 +109,7 @@ abstract class AppLocalizations {
     Locale('ru'),
     Locale('nl'),
     Locale('es'),
-    Locale('kr'),
+    Locale('ko'),
   ];
 
   /// Application name displayed in the app and OS UI.
@@ -2271,7 +2271,7 @@ class _AppLocalizationsDelegate
     'es',
     'fr',
     'it',
-    'kr',
+    'ko',
     'nl',
     'ru',
     'zh',
@@ -2294,8 +2294,8 @@ AppLocalizations lookupAppLocalizations(Locale locale) {
       return AppLocalizationsFr();
     case 'it':
       return AppLocalizationsIt();
-    case 'kr':
-      return AppLocalizationsKr();
+    case 'ko':
+      return AppLocalizationsKo();
     case 'nl':
       return AppLocalizationsNl();
     case 'ru':