[libcxx-commits] [libcxx] [libc++][NFC] Update LWG3477(Simplify constraints for `semiregular-box`) status (PR #85399)

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yronglin wrote:

> I've updated the title of the commit message to match the status, with that I'm happy with this commit. Let's ship it.

Many thanks for your review!

https://github.com/llvm/llvm-project/pull/85399