轴标签的自动省略回调函数没有进行处理🐛 [BUG]

### 🐛 Bug description [Please make everyone to understand it]
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轴标签的自动省略回调函数没有进行处理

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> 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.设置回调函数自动省略不生效
2.yuan源码中未发现对轴标签的自动省略功能进行处理

### 🏞 Expected result
对轴标签的自动省略回调函数进行支持，方便进行自定义

### 🚑 Any additional [like screenshots]

* **G2Plot Version**:2.4.20
* **Platform**:

Start by reviewing the G2Plot 2.4.20 axis-label configuration and the source path shown in the screenshots. The issue provides no minimal reproduction link, file name, or test location, so first reproduce the callback failure from the reported setup. Done means the automatic axis-label ellipsis callback is supported and its behavior is covered by a regression test.

Written by the indexing model from the issue text.