refactor: remove the unused submitUserInfo method and enhance the searchable dropdown functionality

- Removed `submitUserInfo` from auth services and integrations.
- Refined dropdown with new multi-select and searchable options.
- Added `PersianFormatter` for better input handling.
- Updated `local.properties` to set flutter build mode to debug.

packages/chicken/lib/data/repositories/auth/auth_repository.dart

@@ -10,8 +10,6 @@ abstract class AuthRepository {
 
   Future<UserInfoModel?> getUserInfo(String phoneNumber);
 
-  Future<void> submitUserInfo({required String phone, String? deviceName});
-
-  /// Calls `/steward-app-login/` with Bearer token and optional query parameters.
+  /// Calls `/steward-app-login/` with Bearer token and required `server` query param.
   Future<void> stewardAppLogin({required String token, Map<String, dynamic>? queryParameters});
 }

packages/chicken/lib/data/repositories/auth/auth_repository_imp.dart

@@ -23,12 +23,6 @@ class AuthRepositoryImpl implements AuthRepository {
   Future<UserInfoModel?> getUserInfo(String phoneNumber) async =>
       await authRemote.getUserInfo(phoneNumber);
 
-  @override
-  Future<void> submitUserInfo({required String phone, String? deviceName}) async {
-    var tmp = {'mobile': phone, 'device_name': deviceName};
-    await authRemote.submitUserInfo(tmp);
-  }
-
   @override
   Future<void> stewardAppLogin({
     required String token,