LowerTypeTests: Mark CFI jump table sections as eligible for relaxation.
Use !elf_section_properties metadata to set the type and entry size to
the correct values, and set the preferred alignment to the entry size
to enable last jump table entry placement.
Reviewers: vitalybuka, MaskRay
Reviewed By: vitalybuka, MaskRay
Pull Request: https://github.com/llvm/llvm-project/pull/149261