[clang-tools-extra] [Clang-Tidy] Fixed `cppcoreguidelines-init-variables` to handle ObjC for-in loops. (PR #191306)

[Daniil Dudkin via cfe-commits]

unterumarmung wrote:

Well, Objective-C++ is still C++, so I think `cppcoreguidelines` checks should work on the Objective-C++ code to a certain degree

https://github.com/llvm/llvm-project/pull/191306