[lld] [ELF] Retain relocation sections for GOT entries added by relaxOnce (PR #225594)

[via llvm-commits]

llvmbot wrote:

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Failed to cherry-pick: 7a7e8bb81b978ef90f6da580bdecd34d053e580f

https://github.com/llvm/llvm-project/actions/runs/36175321923

Please manually backport the fix and push it to your github fork.  Once this is done, please create a [pull request](https://github.com/llvm/llvm-project/compare)

https://github.com/llvm/llvm-project/pull/225594