[Vuejs]-Vue ssr application styling breaks when upgrade to css-loader 4.0.0

Discussion and workaround for SSR apps: https://github.com/vuejs/vue-style-loader/issues/46#issuecomment-670624576

This also works for non-SSR apps, but in that case vue-style loader can simply be replaced with style-loader: https://github.com/vuejs/vue-style-loader/issues/42#issuecomment-678586075