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

[Ilia Kuklin via llvm-commits]

kuilpd wrote:

I addressed `lldb-shell-subprocess` tests failing in #147955 , but there's still 2 data formatter tests failing, not sure what's happening there yet.

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