.css and .st.css files are not included in the head in deterministic order

[alisey]

I have the following list of imports:

import '@wixc3/wcs-components/src/themes/reset.css';
import '@wixc3/wcs-components/src/themes/global.st.css';

Sometimes reset.css appears first in the head, and sometimes global.st.css. If I rename reset.css to reset.st.css it always appears first, as expected.

Not sure if this is more related to Stylable, or to Webpack configuration. If it's the latter, we should document this and suggest a workaround.