[llvm] [LTT] Bias branch weights as "expected" when lowering type tests with conditional (PR #170752)

[Mircea Trofin via llvm-commits]

mtrofin wrote:

### Merge activity

* **Dec 9, 5:01 AM UTC**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.com/github/pr/llvm/llvm-project/170752).


https://github.com/llvm/llvm-project/pull/170752