configureBabelPresetEnv(callback) {
        webpackConfig.configureBabelPresetEnv(callback);

        return this;
    }
Configure @babel/preset-env

https://babeljs.io/docs/en/babel-preset-env

```
Encore.configureBabelPresetEnv(function(options) {
    // change the @babel/preset-env config
    // if you use an external Babel configuration
    // this callback will NOT be used
    // options.corejs = 3;
    // options.useBuiltIns = 'usage';
    // ...
});
```

@param {OptionsCallback<object>} callback
@returns {Encore}