this.graph.getContentBBox()计算graph高度不准确

[wbingyuan]

问题描述

在第一版的时候有个导出功能，通过getContentBBox获得的高度是真实的graph高度；
升级到v2之后，通过getContentBBox获得的高度是真实的graph高度不准确，通过加入参数{ useCellGeometry: false }可以解决，但是导出为png底层调用的getContentBBox是没有参数的，导致导出图片显示不全

重现链接

内网

重现步骤

点击导出按钮导出topo为png

预期行为

宽高正确
实际不准确

平台

• 操作系统: [win10]
• 网页浏览器: [Google Chrome]
• X6 版本: [2.17.1]

屏幕截图或视频（可选）

No response

补充说明（可选）

No response

[x6-bot]

👋 @wbingyuan

Thanks for opening your first issue here! If you're reporting a 🐞 bug, please make sure you include steps to reproduce it.
To help make it easier for us to investigate your issue, please follow the contributing guidelines.
We get a lot of issues on this repo, so please be patient and we will get back to you as soon as we can.