[clang] [clang][Diagnostics] Use `enum_select` for `err_builtin_invalid_arg_type` (PR #215480)

[Mariya Podchishchaeva via cfe-commits]

https://github.com/Fznamznon commented:

It is good to improve such a diagnostic, however I do have two concerns:
- The issue https://github.com/llvm/llvm-project/issues/123121 is an omni bus for all diagnostics that are present, so putting fixes {that_issue_number} to PR desc is not correct since this PR only fixes a single diagnostic. The issue can be closed once we can claim that all the issues have been fixed.
- The issue is marked as good-first-issue and using AI tools to fix these is not allowed per our AI [policy](https://llvm.org/docs/AIToolPolicy.html)

https://github.com/llvm/llvm-project/pull/215480