Uncode Emoji incorrectly converted to text inside code blocks

[codinghorror (Jeff Atwood)]

This is a single Unicode Emoji character

This is a single Unicode Emoji character inside a code span

😀

This is a single Unicode Emoji character inside a code block

😀

The latter two should not be converted to text :grinning: as they are inside code and should be considered literal characters.

[zogstrip (Régis Hanol)]

The joy of hoisting… and -code dialects.