🤔 [QUESTION] 分组子弹图支持滚动条吗?

### 🐛 Question description [Please make everyone to understand it]
分组子弹图数据两个量太大的情况,会挤在一起?请问下支持滚动条设置吗

### 💻 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 by reproducing the grouped bullet chart case in the linked G2Plot CodeSandbox template with data values large enough to overlap. Read the chart’s available configuration and determine whether scrollbar support is possible; done means the behavior is implemented or its limitation and configuration path are clearly documented.

Written by the indexing model from the issue text.