[llvm-branch-commits] [clang] release/20.x: [clang] Forward TPL of NestedNameSpecifier (PR #137806)

[Shafik Yaghmour via llvm-branch-commits]

https://github.com/shafik commented:

The summary should also explain the problem being fixed and how exactly this fixes the problem. The motivation for backporting is not clear to me from what is provided.

https://github.com/llvm/llvm-project/pull/137806