[BUG]lrl_detector test

[Ftgn-dpA]

出现问题：keyerror: 'idct'
检查到test.py中prepare_testing_data函数未给lrl配置lrl_dataset
修改后代码：

        if not config.get('dataset_type', None) == 'lrl':
            test_set = DeepfakeAbstractBaseDataset(
                config=config,
                mode='test',
            )
        else:
            test_set = LRLDataset(
                config=config,
                mode='test',
            )

test_one_dataset中将idct move to device：

        # lrl idct data
        idct = data_dict.get('idct')
        if idct is not None:
            data_dict['idct'] = idct.to(device)