- [ ] I have searched the [issues](https://github.com/vueComponent/ant-design-vue/issues) of this repository and believe that this is not a duplicate. ### What problem does this feature solve? look here: https://codesandbox.io/p/sandbox/7zfj64 ### What does the proposed API look like? Keyboard navigation (↑↓←→ keys) should work normally in dropdown <!-- generated by issue-helper. DO NOT REMOVE -->