support hideStack in WebpackError

[ahabhgk]

https://github.com/webpack/webpack/blob/87660921808566ef3b8796f8df61bd79fc026108/lib/WebpackError.js#L32

• webpack-test/cases/compile/error-hide-stack

[h-a-n-a]

I would like to add part of this to the new error refactor.

[h-a-n-a]

Related: #4339