🤔 [QUESTION] 如何让联动图表点击后保持常亮

### 🐛 Question description [Please make everyone to understand it]

### 💻 Link to minimal reproduction

Please provide a link by forking these links [g2plot](https://codesandbox.io/s/g2plot-reproduction-template-gyej1) or GitHub repo. What is a minimal reproduction, and why is it required?

### 🏞 Expected result

### 🚑 Any additional [like screenshots]

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

Start with the linked G2Plot CodeSandbox reproduction template and compare its linked-chart click behavior with the expected screenshot. The issue does not provide a reproduction, G2Plot version, or platform, so collect those details first; done means agreeing on the intended persistent-highlight behavior and verifying it in a minimal example.

Written by the indexing model from the issue text.