[llvm] [LoopUtils] Pre-commit test for follow-up metadata for loops (NFC) (PR #131337)

[Michael Kruse via llvm-commits]

https://github.com/Meinersbur commented:

I'd remove "Pre-commit" from the title, I was confusing it with the pre-commit CI.

https://github.com/llvm/llvm-project/pull/131337