[Bug] the scroll legend cannot slide to the bottom

[xuefei1313]

Version

1.12.2

Link to Minimal Reproduction

null

Steps to Reproduce

https://www.visactor.io/vchart/demo/legend/scrollbar?version=1.11.13

Current Behavior

Expected Behavior

could show all items

Environment

- OS:
- Browser:
- Framework:

Any additional comments?

No response