v4.0 Doughnut Hover tips are not always appearing/flicker

https://github.com/user-attachments/assets/fb966df5-b06e-4a26-a29d-8085110a2d27

Created using

```
from "Stream Store"

// where Status = "Deleted"

eval Cnt = count()
eval Key = floorDay(${Create Time})

group by Key, ${Duration}

select Key, ${Duration}, Cnt

show as Doughnut(names = ${Duration}, values = Cnt, gridSeries = Key)
```