fix(drivers/189pc): pass pointer to RenameResp in Rename method

[Ovear]

Summary / 摘要

修复189pc驱动重命名后，未正确将返回存入变量，导致重命名的项目会变成零值项目，表现为空文件名文件，并持续到下次列表缓存刷新。

网页端API返回该空文件对象类似如下：

{
	"1": {
		"name": "",
		"size": 0,
		"is_dir": false,
		"modified": "0001-01-01T00:00:00Z",
		"created": "0001-01-01T00:00:00Z",
		"sign": "__REDACTED__",
		"thumb": "",
		"type": 0,
		"hashinfo": "{\"md5\":\"\"}",
		"hash_info": {
			"md5": ""
		}
	}
}

Rename function passed RenameResp by value instead of pointer, causing the API response to be discarded and producing a zero-value file entry with empty name, zero size, and zero timestamps after rename.

• This PR has breaking changes.
  / 此 PR 包含破坏性变更。
• This PR changes public API, config, storage format, or migration behavior.
  / 此 PR 修改了公开 API、配置、存储格式或迁移行为。
• This PR requires corresponding changes in related repositories.
  / 此 PR 需要关联仓库同步修改。

Testing / 测试

• go test ./...
• Manual test / 手动测试: 网页端/SFTP手动重命名后正常显示新文件名

Checklist / 检查清单

• I have read CONTRIBUTING.
  / 我已阅读 CONTRIBUTING。
• I confirm this contribution follows the repository license, contribution policy, and code of conduct.
  / 我确认此贡献符合仓库许可证、贡献规范和行为准则。
• I have formatted the changed code with gofmt, go fmt, or prettier where applicable.
  / 我已按适用情况使用 gofmt、go fmt 或 prettier 格式化变更代码。
• I have requested review from relevant maintainers or code owners where applicable.
  / 我已在适用情况下请求相关维护者或代码所有者审查。