[clang] [CIR] Let ConstantOp builder infer its type automatically (PR #136606)

[Erich Keane via cfe-commits]

erichkeane wrote:

Looks like we now hit this: https://github.com/llvm/llvm-project/commit/4bcc414af3782c333f3d535c0e0a92e6120868f5

So the error was added since this patch.  I'll work with @andykaylor @mmha /etc separately to see what it takes to fix this.

https://github.com/llvm/llvm-project/pull/136606