Issue when using CSS modules' compose from a node_modules file

[thibautRe]

Do you want to request a feature or report a bug?
A bug

The bug was introduced by this PR.

What is the current behavior?
When trying to use compose from CSS modules from a node_modules dependency, it breaks with an Can't resolve error.

The bug has been introduced by this commit in css-loader but is actually only reproducible with postcss-loader as well (at least that's how I uncovered it)

If the current behavior is a bug, please provide the steps to reproduce.
Here's a reproduction of the bug. The idea is the following:

• The application uses webpack, extract-text-plugin, css-loader, postcss-loader with postcss-import.
• It tries to composes with a class from a UI-kit (in my case, fyndiq-component-dropdown).
• The error happens when fyndiq-component-dropdown tries to import the colors from the same UI kit fyndiq-styles-colors

What is the expected behavior?
It shouldn't break, just like it used to work prior to v0.28.11

Please mention other relevant information such as your webpack version, Node.js version and Operating System.
Webpack 3 (also breaks with Webpack 4)
Node 8.9.1
NPM 5.7.1 (also breaks with NPM 5.8.0)

[alexander-akait]

Fixed in master, in next version you should use ~fyndiq-component-dropdown/styles.css