🐛 [BUG]折线图的标注点动画效果消失

### 🐛 Bug description [Please make everyone to understand it]
在多折线图的标注点，悬停在图例使其高亮效果后，标注点的动画会消失，官网的图例也是这样

https://g2plot.antv.vision/zh/examples/line/basic#line-with-data-marker

### 📷 Step to reproduce

### 🏞 Expected result
希望动画一直保持

### 🚑 Any additional [like screenshots]


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

Start with the linked G2Plot line-with-data-marker example and reproduce the issue by hovering the legend in a multi-line chart. Compare the marker animation before and after the legend highlight; done means the animation continues while the legend remains highlighted.

Written by the indexing model from the issue text.