[clang-tools-extra] [clang-tidy] support ak_attr_info in diagnostic forwarding (PR #147503)

[Mikael Holmén via cfe-commits]

mikaelholmen wrote:

> Did any of the builders caught this, or it is some local configuration? Asking just in case if we should create one for catching such CE's.

I saw it locally when compiling with -Wall -Werror. I don't know if any builder use -Werror? I don't see any sign of it in https://github.com/llvm/llvm-project/pull/144619 at least.

https://github.com/llvm/llvm-project/pull/147503