[clang] [analyzer] Refine invalidation caused by `fread` (PR #93408)

[Balazs Benics via cfe-commits]

steakhal wrote:

Thanks for the green light!

> Another possible solution is that a generic invalidation support is added to `StdLibraryFunctionsChecker` that can be used for stream related and other functions.

Yes, that would be so nice. However, it's out of scope for me this time.

https://github.com/llvm/llvm-project/pull/93408