如何动态调整combo 收起和展开时，与相邻combo / 节点的距离

### 问题描述

combo 内部子节点/子combo 很多时，外部combo 相对位置很远

### 重现链接

https://stackblitz.com/edit/react-s6bt2i?file=index.js

### 重现步骤


### 预期行为


### 平台

- 操作系统: [macOS, React Native ...]
- 网页浏览器: [Google Chrome]
- G6 版本: [4.8.24 ]

### 屏幕截图或视频（可选）

_No response_

### 补充说明（可选）

_No response_

Start with the StackBlitz reproduction at index.js and compare combo collapse and expansion behavior in G6 4.8.24 with the supplied screenshots. Trace the combo layout and neighboring-node spacing behavior, then verify that expanding or collapsing a combo keeps adjacent elements at the expected distance.

Written by the indexing model from the issue text.