[lldb] [llvm] [LLDB] Switch to using DIL as default implementation for 'frame var'. (PR #147887)

[via llvm-commits]

cmtice wrote:

> Perhaps with a release note saying this happened and how to switch back to the non-default way?

This PR updates the release notes; is that not good enough?

https://github.com/llvm/llvm-project/pull/147887