[llvm] [Support] Recycler: Implement move constructor (PR #120555)

[Akshat Oke via llvm-commits]

optimisan wrote:

### Merge activity

* **Jan 7, 5:16 AM EST**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/120555).


https://github.com/llvm/llvm-project/pull/120555