[clang] [analyzer] Assume the result of 'fopen' can't alias with 'std{in,out,err}' (PR #100085)

[Balazs Benics via cfe-commits]

steakhal wrote:

I didn't mention this in the release notes as I don't think it's that impactful.

https://github.com/llvm/llvm-project/pull/100085