BUG：加密配置的配置详情页面版本对比配置展示未解密

[junechouiscoming]

2.2.0开始就有的bug，加密的配置在配置详情页面点击版本对比，右侧的上一版本配置未解密展示（接口/v1/cs/history/previous）

历史版本页面里面的配置比较可以正常解密展示（接口/v1/cs/history）

看代码是getPreviousConfigHistoryInfo方法未解密数据

    /**
     * Query the detailed configuration history information.
     */
    public ConfigHistoryInfo getConfigHistoryInfo(String dataId, String group, String namespaceId, Long nid)
            throws AccessException {
        ConfigHistoryInfo configHistoryInfo = historyConfigInfoPersistService.detailConfigHistory(nid);
        if (Objects.isNull(configHistoryInfo)) {
            return null;
        }
        // check if history config match the input
        checkHistoryInfoPermission(configHistoryInfo, dataId, group, namespaceId);
        
        String encryptedDataKey = configHistoryInfo.getEncryptedDataKey();
        Pair<String, String> pair = EncryptionHandler
                .decryptHandler(dataId, encryptedDataKey, configHistoryInfo.getContent());
        configHistoryInfo.setContent(pair.getSecond());
        
        return configHistoryInfo;
    }
    
    /**
     * Query previous config history information.
     */
    public ConfigHistoryInfo getPreviousConfigHistoryInfo(String dataId, String group, String namespaceId, Long id)
            throws AccessException {
        ConfigHistoryInfo configHistoryInfo = historyConfigInfoPersistService.detailPreviousConfigHistory(id);
        if (Objects.isNull(configHistoryInfo)) {
            return null;
        }
        // check if history config match the input
        checkHistoryInfoPermission(configHistoryInfo, dataId, group, namespaceId);
        return configHistoryInfo;
    }

[godhth]

@ i will solve it @