[clang-tools-extra] [clang-tidy] Avoid brace fix-it crash in macro body expansion (PR #198788)

[Baranov Victor via cfe-commits]

vbvictor wrote:

> localspook seems to be away for now (2weeks since last review). So I'd like to merge the PR first, if anything unexpected happens, I'll revert it and apply another fix. WDYT @vbvictor

Oh we can land then.. Didn't realise he was absent

https://github.com/llvm/llvm-project/pull/198788