Error when liquid file is deleted in watch mode

[davidwarrington]

In watch mode deleting a liquid file causes clean-webpack-plugin to throw an error. This is because dangerouslyAllowCleanPatternsOutsideProject is not set to true, and the Webpack context is /dist/assets (where the JS files are created).

Until this issue is resolved, simply restarting watch mode can be used as a workaround.