🐛[BUG]官网pro-layout组件，黑色主题和黑色主紧凑主题失效。

提问前先看看：

https://github.com/ryanhanwu/How-To-Ask-Questions-The-Smart-Way/blob/main/README-zh_CN.md

### 🐛 bug 描述
点击pro-layout组件，点demo，选择右侧【黑色主题】，主题颜色失效

### 📷 复现步骤

### 🏞 期望结果

### 💻 复现代码

### © 版本信息

- ProComponents 版本: [e.g. 4.0.0]
- umi 版本
- 浏览器环境
- 开发环境 [e.g. mac OS]

### 🚑 其他信息

Start by reproducing the problem in the pro-layout component demo: select the black theme and the black compact theme from the right-side options. Trace the theme selection and compare the rendered result with the expected black styling; done means both themes visibly take effect.

Written by the indexing model from the issue text.