Disable instance handshake in dev builds (#3485)

It feels like every week or two someone hits this and is confused about
why the app isn't launch, been meaning to disable this in dev builds for
a while. This does mean that it'll be possible to hit the local DB lock
panic in a dev build if you run it multiple times but that is so rare
that it seems preferable

Release Notes:

- N/A
ee23fa43dcJulia committed on 12/4/2023, 2:43:24 PM· committed by GitHubparents45230dcdfe4fc4
3 files changedLine totals unavailable