devServe inline:false is invalid

[HuangZhaoPing]

Version

3.11.0

Reproduction link

https://new-issue.vuejs.org/?repo=vuejs/vue-cli

Environment info

win10

Steps to reproduce

vue.config.js

module.export = {
  devServer: {
    inline: false,
    hot: false
  }
}

or

module.export = {
  chainWebpack: config => {
    config.devServer.set('inline', false)
    config.devServer.set('hot', false)
  }
}

When files are modified, browsers refresh, I hope browsers don't refresh automatically

What is expected?

browsers refresh

What is actually happening?

browsers don't refresh automatically

[haoqunjiang]

Wrong config. See #4368 (comment)