Environment
Provide version numbers for the following components (information can be retrieved by runningtns info in your project folder or by inspecting thepackage.json of the project):

• CLI: 6.2.0-rc
• Cross-platform modules: 6.2.0-rc
• Android Runtime:
• iOS Runtime:
• Plugin(s):
• Node.js:
• Please, attach your package.json and webpack.config.js as these configurations are usually critical for investigating issues with webpack

Describe the bug

Webpack compilation doesn't stop on error when changingapp.[s]css file injs,ts,angular orvue projects. Also it doesn't stop when changing whatever.[s]css file injs orts projects.

To Reproduce

1. tns create js --js
2. npm i tns-core-modules@rc --save --save-exact
3. npm i nativescript-dev-webpack@rc --save-dev --save-exact
4. node_modules/.bin/update-ns-webpack --deps –configs
5. tns run android

Make invalid change in app.css file. The compilation doesn’t stop on the error, the app is refreshed on device with broken css

Expected behavior

The webpack compilation should stop when there is an error.