[clang-tools-extra] [clang-tidy] Fix support for typedefs in readability-identifier-naming (PR #66835)

[Carlos Galvez via cfe-commits]

https://github.com/carlosgalvezp approved this pull request.

LGTM, thanks for the fix and the great cleanup!

https://github.com/llvm/llvm-project/pull/66835