[lld] [ELF] Support R_RISCV_SET_ULEB128/R_RISCV_SUB_ULEB128 in non-SHF_ALLOC sections (PR #72610)

[Kito Cheng via llvm-commits]

https://github.com/kito-cheng commented:

It's a really elegant way to write and check for length at the same time!

https://github.com/llvm/llvm-project/pull/72610