It certainly looks like a simple template that DDG applies consistently to all queries for a UTF-8 byte literal. It's the exact same template for a query for a

It certainly looks like a simple template that DDG applies consistently to all queries for a UTF-8 byte literal. It's the exact same template for a query for a more straightforward literal, like u0041. So I think it's fair to say that it's not intentional in the sense of being a deliberately added easter egg. Of course, they might be aware of the behavior and decided to leave it that way.