:dir and :lang transpilation fails in some selectors

[jacobrask]

:dir and :lang transpilation is a bit unreliable when used together with pseudo classes, pseudo elements and child selectors. In many cases they are not transpiled at all.

• .foo:dir(rtl) ✅
• :is(.foo:dir(rtl)) ✅
• :where(.foo:dir(rtl)) 🚫
• .foo:dir(rtl)::after 🚫
• .foo:dir(rtl) div 🚫

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