[clang] Revert "[Modules] Delay deserialization of preferred_name attribute at r…" (PR #123962)

[Ilya Biryukov via cfe-commits]

ilya-biryukov wrote:

@VitaNuo I have landed a revert in f63e8ed16ef1fd2deb80cd88b5ca9d5b631b1c36, we generally don't use PRs for reverts (just `git revert <commit>`, check it builds and `git push origin main`).

https://github.com/llvm/llvm-project/pull/123962