漏斗图如何能横向展示

- [ ] I have searched the [issues](https://github.com/antvis/f2/issues) of this repository and believe that this is not a duplicate.

### What problem does this feature solve?
漏斗图展示是纵向的，如何设置成横向？API上coord相关配置使用后都不行

### What does the proposed API look like?
有一个配置项可以让我设置漏斗图横向展示

Start by locating the funnel chart implementation and the existing coord-related configuration, then reproduce the current vertical rendering and verify why those settings do not change its orientation. Define the configuration needed for horizontal display and confirm the expected result with a representative funnel chart before proposing the API.

Written by the indexing model from the issue text.