This query says it expects a type error because the non-executed branch of the
conditional does not deliver a QName. But there's no reason for that to be a
type error under dynamic typing: the dynamic type is a QName, which is correct.
It's possible that a static typing implementation would give an error because
the two branches of the conditional are different types, though it's hard to see
how that can be achieved since the type of the $input-context variable has not
been declared.

Also affects NamespaceURIFromQNameFunc022