[llvm] [llvm][unittests] Put human-readable names on TargetParserTests. NFC (PR #80749)

[Jon Roelofs via llvm-commits]

jroelofs wrote:

> ⚠️ C/C++ code formatter, clang-format found issues in your code. ⚠️
> 
>  You can test this locally with the following command:
>  View the diff from clang-format here.

Ignoring this. Merge conflicts from constant re-formats here are terrible for downstream maintainers.

https://github.com/llvm/llvm-project/pull/80749