[clang] [CIR][NFC] Use actual operand name in adaptor-obtained operands (PR #143028)

[Henrich Lauko via cfe-commits]

xlauko wrote:

### Merge activity

* **Jun 10, 7:24 AM UTC**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/143028).


https://github.com/llvm/llvm-project/pull/143028