Repository: create-react-app
Issue: Wrong HOST is shown in the console
Labels: tag: enhancement

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### Describe the bug

```bash
$ cat .env 
BROWSER=false
PORT=8080
HOST=0.0.0.0
SKIP_PREFLIGHT_CHECK=true

$ cat package.json | grep react-scripts
                "react-scripts": "3.4.1",
```

After start it still shows localhost:

```
Starting the development server...
Compiled successfully!
You can now view test in the browser.
  Local:            http://localhost:8080
  On Your Network:  http://172.30.0.6:8080
Note that the development build is not optimized.
To create a production build, use npm run build.
```

### Did you try recovering your dependencies?

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No.

### Which terms did you search for in User Guide?

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  Please scan these few sections for common problems.
  Additionally, you can search the User Guide itself for something you're having issues with:

  https://facebook.github.io/create-react-app/

  If you didn't find the solution, please share which words you searched for.
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https://github.com/facebook/create-react-app/issues?q=%22On+Your+Network%3A%22+host

### Environment

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  Run the following command in your React app's folder in terminal.
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```
Environment Info:

  current version of create-react-app: 3.4.1
  running from /home/redacted/.npm/_npx/18523/pnpm-global/4/node_modules/.pnpm/create-react-app@3.4.1/node_modules/create-react-app

  System:
    OS: Linux 4.15 Ubuntu 18.04.3 LTS (Bionic Beaver)
    CPU: (8) x64 Intel(R) Xeon(R) CPU E3-1246 v3 @ 3.50GHz
  Binaries:
    Node: 12.17.0 - ~/.nvm/versions/node/v12.17.0/bin/node
    Yarn: 1.22.4 - ~/.yvm/shim/yarn
    npm: 6.14.4 - ~/.nvm/versions/node/v12.17.0/bin/npm
  Browsers:
    Chrome: 81.0.4044.138
    Firefox: Not Found
  npmPackages:
    react: 16.13.1 => 16.13.1 
    react-dom: 16.13.1 => 16.13.1 
    react-scripts: 3.4.1 => 3.4.1 
  npmGlobalPackages:
    create-react-app: Not Found
```

### Steps to reproduce

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### Expected behavior

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It shows 0.0.0.0:
```
Starting the development server...
Compiled successfully!
You can now view test in the browser.
  Local:            http://0.0.0.0:8080
  On Your Network:  http://172.30.0.6:8080
Note that the development build is not optimized.
To create a production build, use npm run build.
```

### Actual behavior

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  Is something broken, or not behaving as you expected?
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It shows always localhost.

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