[llvm] [Dexter] Temporarily print DAP logs on specific exception (PR #157130)

[Stephen Tozer via llvm-commits]

https://github.com/SLTozer approved this pull request.

It's rather unfortunate that there's not a better way of getting useful output here, but it is a finicky error, and this should provide the necessary output to diagnose the issue without affecting normal output.

https://github.com/llvm/llvm-project/pull/157130