[clang] [clang-format] Fix a regression in annotating BK_BracedInit (PR #87450)

[via cfe-commits]

llvmbot wrote:

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Failed to cherry-pick: 7c9c38eaa9b7

https://github.com/llvm/llvm-project/actions/runs/8756450944

Please manually backport the fix and push it to your github fork.  Once this is done, please create a [pull request](https://github.com/llvm/llvm-project/compare)

https://github.com/llvm/llvm-project/pull/87450