[libcxx-commits] [libcxx] [libc++] Revert removal of <movable_box.h> to fix lldb test failure (PR #140960)

[Peng Liu via libcxx-commits]

winner245 wrote:

@ldionne I agree with your plan. This is not a bug in libc++. It is better to mark the failing test as unsupported in LLDB as a temporary fix, and then remove the `UNSUPPORTED` annotation once a long-term fix is available. That said, I will close this PR. 

https://github.com/llvm/llvm-project/pull/140960