[clang-tools-extra] [clang-tidy][modernize] Replace memmove/memcpy with std::copy (PR #122940)

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kadircet wrote:

> @kadircet Does the file need further changes from what I've already added?

probably yes, it'd be great if you can just run https://github.com/llvm/llvm-project/blob/main/clang-tools-extra/clangd/TidyFastChecks.py to generate the edits

https://github.com/llvm/llvm-project/pull/122940