[clang] [CIR] cir.call with scalar return type (PR #135552)

[Erich Keane via cfe-commits]

https://github.com/erichkeane approved this pull request.

This is probably ok now?  I'd still love it if we could get one of the Code gen owners to let us know what is going on with this/see if this is somethign they want for classic codegen, but they can RAC.

https://github.com/llvm/llvm-project/pull/135552