[clang] [AST] Only dump desugared type when visibly different (PR #65214)

[Jessica Clarke via cfe-commits]

jrtc27 wrote:

> So it looks like some of these changes undo some of the change introduced by @mizvekov in some tests. Maybe @zygoloid or @AaronBallman has some more input here.

Do you have a pointer to such changes?

https://github.com/llvm/llvm-project/pull/65214