Heuristic resolution does not find member of type referenced via DependentNameType

[HighCommander4]

In the following code:

template <typename T>
struct Waldo {
  void find();
};

template <typename T>
struct MetaWaldo {
  using Type = Waldo<T>;
};

template <typename T>
void foo(typename MetaWaldo<T>::Type w) {
  w.find();
}

go-to-definition on the use of find() does not produce Waldo::find().

(Originally posted at #1663 (comment).)

[HighCommander4]

Proposed fix: https://reviews.llvm.org/D152645