饼图 poi-select 似乎不是很灵敏

* 问题：最近做一个需求，使用了F2的饼图`interaction：'poi-select'`，但是发现效果不是很好，点击时不是很灵敏。
* 复现：
1. 官网demo：https://f2.antv.vision/zh/examples/pie/basic#pie-click
2. 点击该饼图
3. 任意点击，也会出现不是很灵敏的现象

希望能处理一下，谢谢~

Start with the official pie-chart demo at https://f2.antv.vision/zh/examples/pie/basic#pie-click and reproduce the issue using interaction: 'poi-select'. Trace the pie-chart interaction and hit-testing behavior from that example. Done means clicks on the pie reliably select the intended slice instead of intermittently failing.

Written by the indexing model from the issue text.