[clang] [CIR] Implement `AnyScalarType` constraint (PR #141033)

[Henrich Lauko via cfe-commits]

xlauko wrote:

### Merge activity

* **May 22, 4:46 PM UTC**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/141033).


https://github.com/llvm/llvm-project/pull/141033