[clang] [analyzer] Fix crash on non-standard string function overloads (PR #180544)

[via cfe-commits]

ParkHanbum wrote:

I don't consider myself to have a deep understanding of static analyzers, so I couldn't be certain what differences might arise between cases where `evalStrcmpCommon` is called and those where it isn't. 

As you mentioned, I used AI to identify the problematic path, log the relevant information, and acquire the necessary APIs. That code was created after I explained the logic to the AI and had it verify it.

However, for the comments, I used the text generated by the AI as-is. 

https://github.com/llvm/llvm-project/pull/180544