[clang] Rework the printing of attributes (PR #87281)

[Erich Keane via cfe-commits]

erichkeane wrote:

> @erichkeane, thank you. What's the process of including this in the next release?

After CI is complete, you can click "Squash and Merge" below (if you cannot, let us know and someone can do it for you), and it'll be included in the 19.1 release this summer.

https://github.com/llvm/llvm-project/pull/87281