It is not possible to set the z-index order for items located in different children in the DualAxis chart

### 问题描述

The columns overlap each other, there is no way to set the order of rendering blocks lying in different parent.

### 重现链接

_No response_

### 重现步骤

1. Create a DualAxis chart
2. Add multiple multi axes
3. Select the interval display type
4. Set zIndex for all element

### 预期行为

zIndex is applied to all elements, regardless of which parent it is located in

### 平台

- 操作系统: Windows
- 网页浏览器: Google Chrome

### 屏幕截图或视频（可选）


### 补充说明（可选）

_No response_

Start by reproducing the DualAxis chart with multiple axes, interval elements, and different zIndex values in Chrome. Trace how rendering order is handled across different parent elements; done means zIndex controls the stacking order consistently across all elements.

Written by the indexing model from the issue text.