[clang] [clang-format] Fix a bug in annotating StartOfName (PR #99791)

[Owen Pan via cfe-commits]

owenca wrote:

> That is very unfortunate. It means one will either get different results for the clang-format versions, one disables the formatting, or works around it by sth. Like Q_EMIT(something()->mySignal()).

Or wait for the next release (in this case 19.1.0, which is just around the corner).

https://github.com/llvm/llvm-project/pull/99791