[clang] [PATCH 1/4] [clang] Improve nested name specifier AST representation (PR #147835)

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https://github.com/Sirraide commented:

Some comments, but I will say that I haven’t nearly reviewed all of this because it’s rather massive (and I’m also not too familiar w/ everything around NNSs).

https://github.com/llvm/llvm-project/pull/147835