[clang] Qualify non-dependent types of a class template with its declaration (PR #67566)

[Vassil Vassilev via cfe-commits]

vgvassilev wrote:

> I gave it a quick try, and we would still end up with the same result in our codebase. But, generally, this would not probably be feasible for us as a solution.

do you have an idea why? Can you show the diff of the changes you made? Is the void specialization not explicit?

https://github.com/llvm/llvm-project/pull/67566