[clang] [clang] Prevent recursive copy initialization during variadic argument promotion (PR #196744)

[Daniil Dudkin via cfe-commits]

https://github.com/unterumarmung commented:

Please add an entry to the release notes. 

Judging by the PR description, it seems that PR was partially or fully prepared using an AI tool. Please make sure to follow this policy: https://llvm.org/docs/AIToolPolicy.html
> Contributors should note tool usage in their pull request description, commit message, or wherever authorship is normally indicated for the work.

> To ensure sufficient self review and understanding of the work, it is strongly recommended that contributors write PR descriptions themselves

https://github.com/llvm/llvm-project/pull/196744