Auto merge of #110232 - Amanieu:old-llvm-components, r=petrochenkov

Allow older LLVM versions to have missing components

This check was introduced by #77280 to ensure that all tests that are filtered by LLVM component are actually tested in CI. However this causes issues for new targets (e.g. #101069) where support is only available on the latest LLVM version.

This PR restricts the tests to only CI jobs that use the latest LLVM version.

Author: bors