当有横向滚动条时，DirectoryTree组件选中时有问题

[baizn]

• I have searched the issues of this repository and believe that this is not a duplicate.

Reproduction link

Steps to reproduce

如图

What is expected?

有滚动条时，选中时高亮背景也能够覆盖整个行。

What is actually happening?

如图

Environment	Info
antd	3.26.5
React	0.16.x
System	mac
Browser	chorme最新

[ant-design-bot]

Hello @baizn. Please provide a online reproduction by forking this link https://u.ant.design/codesandbox-repro or a minimal GitHub repository. Issues labeled by Need Reproduce will be closed if no activities in 7 days.

你好 @baizn, 我们需要你提供一个在线的重现实例以便于我们帮你排查问题。你可以通过点击 此处 创建一个 codesandbox 或者提供一个最小化的 GitHub 仓库。7 天内未跟进的 issue 将会被自动关闭。

[afc163]

https://codesandbox.io/s/keen-hodgkin-8p6mr

[zombieJ]

Close since v3 is not in maintain.