[clang-tools-extra] [clang-tidy][NFC] swap cppcoreguidelines-narrowing-conversions and bugprone-narrowing-conversions (PR #120245)

[Carlos Galvez via cfe-commits]

https://github.com/carlosgalvezp requested changes to this pull request.

LGTM! However I think we need to update:

- Release Notes. This is not quite a NFC change for users, since most of them probably disable aliases, so some of them might be left out without this check enabled.

- Alias table: now the alias relationship is the other way around.

https://github.com/llvm/llvm-project/pull/120245