[clang] [CIR] Make ZeroAttr use AttrBuilderWithInferredContext (PR #136604)

[Henrich Lauko via cfe-commits]

xlauko wrote:

### Merge activity

* **Apr 22, 2:26 AM EDT**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/136604).


https://github.com/llvm/llvm-project/pull/136604