[clang-tools-extra] [clang-tidy] Fix false positive for cppcoreguidelines-pro-bounds-pointer-arithmetic (PR #127394)

[Carlos Galvez via cfe-commits]

carlosgalvezp wrote:

LGTM in general, but won't this fail with a std::map<int, int>, since the key is an integer?

Please rebase on top of latest main and resolve conflicts.

https://github.com/llvm/llvm-project/pull/127394