Tests CSS.getMatchedStylesForNode() under @layer rules.
Dumping inline style: 
{
}
Dumping matched rules: 
@layer base
    *:where(#inspected)* {    regular
    }
@media (width > 0px)
    @layer base
         {    regular
            color: green; @[5:14-5:27]
            color: green; @[undefined-undefined]
        }
Dumping inherited rules: