fix: merge babel preset

[xuchaobei]

Types of changes

• [ ] New feature
• [x] Bug fix
• [ ] Documentation change
• [ ] Coding style change
• [ ] Refactoring
• [ ] Performance improvement
• [ ] Test cases
• [ ] Continuous integration
• [ ] Typescript definition change
• [ ] Breaking change

Background and context

当 option 中设置了 preset 时，如果 preset 和 插件中默认的 preset 重复，构建会失败。 例如，期望更改插件中默认使用的 @babel/preset-react 的配置，会出现此问题：

 babelConfig: {
            presets: [
              [
                '@babel/preset-react',
                {
                  runtime: 'automatic', 
                },
              ],
            ],
}

Solution

当检测存在重复 preset 时，合并 preset 的 option，而不是直接追加 preset。

How is the change tested?

Changelog

Changelog(CN)	Changelog(EN)	Related issues

Checklist:

• [ ] Provide changelog for relevant changes (e.g. bug fixes and new features) if applicable.
• [ ] Changes are submitted to the appropriate branch (e.g. features should be submitted to feature branch and others should be submitted to master branch)

Other information