树图放大缩小时，富文本没变化
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- Dominant language
- TypeScript
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Description
### Version
4.7.0
### Reproduction link
[https://gallery.echartsjs.com/editor.html?c=xxtKKOPNWd&comment=0](https://gallery.echartsjs.com/editor.html?c=xxtKKOPNWd&comment=0)
### Steps to reproduce
1、设置roam=true
2、滚轮滚动进行放大缩小
### What is expected?
富文本也随着node节点放大而放大，缩小而缩小
### What is actually happening?
node节点放大缩小，但是富文本不变化
Contributor guide
Research direction
Start with the linked reproduction in ECharts 4.7.0, enable tree-series roam, and compare node scaling with rich-text labels during wheel zoom. Trace the tree chart zoom and rich-text rendering paths; done means labels scale consistently with their nodes in both directions without breaking other tree interactions.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- typescript
- Domain
- data-visualization
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 30/100