[clang] [clang-format] Add AlignAfterOpenBracketOptions (PR #108332)

[Owen Pan via cfe-commits]

owenca wrote:

> When I updated, my build target for `FormatTests` stopped working.
> 
> ```
> ninja -C build clang-format FormatTests
> ninja: Entering directory `build'
> ninja: error: unknown target 'FormatTests'
> ```
> 
> I'm trying to figure out what changed or how to modify my workflow. I think I ran this PR with stale tests.

See https://github.com/llvm/llvm-project/pull/134196#issuecomment-2843956595.

https://github.com/llvm/llvm-project/pull/108332