[Bug] Setting an Icon on the axisPointer handle is currently not working

### Version

@Latest

### Link to Minimal Reproduction

https://echarts.apache.org/en/option.html#xAxis.axisPointer.handle.icon

### Steps to Reproduce

1. Go to the example page in the docs and try setting an icon. None of them show the icon, but when you remove the property, the icon reappears.

### Current Behavior

Setting an Icon on the axisPointer handle property, makes the handle disappear. The examples in the docs are showing this bug, but also when I try locally it happens as well.

### Expected Behavior

I guess I would expect the handle to not disappear and to show the icon... ha.

### Environment

```markdown
- OS: Windows 11
- Browser: Version 139.0.7258.139 (Official Build) (64-bit)
- Framework: N/A
```

### Any additional comments?

_No response_