This plugs a hole where we failed to recognize a CF type when it
appeared as the payload of an enum stored as a property. Curiously,
RemoteMirror is able to reflect this when the enum appears by itself,
just not when it's stored as a property.
The simplest fix is to hook into the TypeInfo calculation which
computes a TypeInfo (basically, the tree of fields) from a TypeRef
(basically, the name of the type, including generic context).
Specifically, we sometimes end up here with a "type alias" that
none of the lookup support seems to be able to handle. Fortunately,
these aliases demangle into a pretty predictable shape, so this
just pattern-matches the specific demangle tree shape to recognize
these as "type aliases in the `__C` module whose name starts with `CF`
and ends with `Ref`".
Resolves rdar://82465109
