[clang] [LifetimeSafety] Fix crash on ternary operator when one of the expressions is `throw` (PR #190345)

[via cfe-commits]

NeKon69 wrote:

Yes I figured it out, the problem was that I didn't ignore implicit casts/parentheses. That was a little dumb..
Now I crash on something really interesting.. Maybe it is as dumb as previous crash, let me know if you spot the reason! Ok let me push the code so I can explain it better

https://github.com/llvm/llvm-project/pull/190345