🐛 [BUG]雷达图辅助线问题

雷达图 annotations arc 默认是圆形，但是雷达图 yAxis.grid.line.type 设置成 'line' 了，arc 如何同样设置成五角形呢 ？

https://codesandbox.io/p/sandbox/lwzfxp


Start by reproducing the radar chart in the linked CodeSandbox and inspect the radar annotations arc alongside the yAxis.grid.line.type configuration. Done means the annotation arc can use the same pentagonal shape as the radar grid instead of remaining circular.

Written by the indexing model from the issue text.