[llvm] BranchProbabilityInfo: Report branch_weights 1, 0 for invoke (PR #72947)

[Matthias Braun via llvm-commits]

MatzeB wrote:

@ebrevnov It seems you are the last person to work on `calcEstimatedHeuristics`, do you think it is fine to hardcode branch probabilities like this and skip the heuristics for exception control flow?

https://github.com/llvm/llvm-project/pull/72947