[clang] [clang-format] Allow array alignment on non-rectangular arrays (PR #143781)

[via cfe-commits]

owenca wrote:

It seems that we are waiting for the following:
- @mydeveloper to confirm that his requested change was addressed
- @HazardyKnusperkeks, @sstwcw, and @owenca to mark their review comments as resolved
- an approval from one of the reviewers

https://github.com/llvm/llvm-project/pull/143781