fix: set refreshToken as '' in google login.

Author: yayo0

lib/data/repositories/user_repository_impl.dart

@@ -78,11 +78,10 @@ class UserRepositoryImpl implements UserRepository {
       final GoogleSignInAuthentication googleAuth =
           await googleUser.authentication;
       final String? idToken = googleAuth.idToken;
-      final String? accessToken = googleAuth.accessToken;
       if (idToken != null) {
         final signInWithGoogleRequestModel = SignInWithGoogleRequestModel(
           idToken: idToken,
-          refreshToken: accessToken ?? '',
+          refreshToken: '',
         );
         await _tokenLocalDataSource.deleteToken();
         final result = await _authenticationRemoteDataSource