[clang] [CIR] Upstream TernaryOp for VectorType (PR #142393)

[Amr Hesham via cfe-commits]

AmrDeveloper wrote:

- `IntegerVector:$cond` will replaced by `CIR_VectorOfIntType` after merging https://github.com/llvm/llvm-project/pull/142222/

- there will be a follow up PR for the folder

https://github.com/llvm/llvm-project/pull/142393