Stylus doesn't handle @supports with native selector statement

[hmalaud]

To reproduce:

@supports selector(:has(*))

Current behavior:

CSS's @supports allows to specify selector in order to test not for properties but for selector capability of browser, which messes with Stylus' built-in selector function.

Expected behavior:

Stylus should compile properly and not interfere.

Environment information:

• stylus version: 0.59.0
• nodejs version: v18.0.0