🐛 [BUG]双轴图单击事件只能获取到一个轴的数据

### 🐛 Bug description [Please make everyone to understand it]
双轴图单击事件只能获取到一个轴的数据
> Please provide a link by forking these links [G2Plot](https://codesandbox.io/s/g2plot-issue-template-gzfdq?file=/index.ts) or GitHub repo, a minimal reproduction.

* _Required_ **Link to minimal reproduction**:

### 📷 Step to reproduce
1.实现双周图
2.编写双周图单击事件，并输出
3.
### 🏞 Expected result
当前元素下的两个轴的数据
### 🚑 Any additional [like screenshots]

* **G2Plot Version**:
* **Platform**:

Create a minimal reproduction of a dual-axis chart and inspect the click-event payload while logging both axes' data. Compare the current payload with the expected data for the clicked element; done means one click exposes data from both axes. No source file, test, version, or platform is identified in the issue.

Written by the indexing model from the issue text.