Safari浏览器中不兼容自定义节点设置position: relative

### 问题描述

在Safari浏览器中使用自定义节点,给自定义节点设置定位position: relative,会出现节点‘飘走’的情况,样式审查的时候节点还在原来位置,但肉眼看节点是移位状态

### 重现链接

https://x6.antv.antgroup.com/examples/node/custom-node#custom-with-react

### 重现步骤

在register自定义节点中设置 position: "relative"

### 预期行为

期望在Safari浏览器中设置自定义节点的position: "relative"定位,节点还能保持正常,而不是飘走

### 平台

- 操作系统: [macOS.]
- 网页浏览器: [ Safari ]
- X6 版本: [2.X,3.X]

### 屏幕截图或视频（可选）

https://github.com/user-attachments/assets/1cc5d76d-dfd6-4722-b495-7cb3759a890f

### 补充说明（可选）

_No response_

Start with the linked custom-node example and reproduce the issue in Safari after setting position: "relative" during custom-node registration. Trace the rendering path responsible for that node and compare it with another browser; done means the node stays in its intended position in Safari, with the existing reproduction still working.

Written by the indexing model from the issue text.