[clang] [clang] Fix pretty-printing assume_aligned attributes (PR #67331)

[Balazs Benics via cfe-commits]

steakhal wrote:

> Also, it appears that the clang-format bot dislikes this commit (but frustratingly won't tell us why?), so perhaps run `git clang-format against all the commits here`

Yup, I have it on save already. It complains about lines I never touched.
As per guidelines, I only run clang-format on the lines touched by the diff, using `git clang-format`.
It says "clang-format did not modify any files"

https://github.com/llvm/llvm-project/pull/67331