🐛 [BUG] 基础柱状图tooltip位置出现错乱

### 🐛 Bug description

在示例中，将鼠标移至 z 轴 39 后面的数据，tooltip 都会出现错乱，柱高亮背景也不对。
https://codesandbox.io/s/vigorous-resonance-1opbmw?file=/index.ts

### 📷 Step to reproduce
显而易见

### 🏞 Expected result
没有错乱

### 🚑 Any additional

* **G2Plot Version**: 2.4.25
* **Platform**:

Reproduce the basic bar chart from the linked CodeSandbox, starting with index.ts and the behavior after moving over data past z-axis value 39. Trace the tooltip position and highlighted bar background, then confirm that both remain aligned and stable in that range.

Written by the indexing model from the issue text.