"Deephaven disconnected" message in non-relevant projects

[alexpeters1208]

When I switch to a different project, I do not really want any information about the Deephaven plugin. I would like to be able to only associate it with relevant projects. Maybe this is a VSCode-level feature that I'm unaware of. Either way, I don't want this:

[bmingles]

@alexpeters1208 this should be addressed by Don't always show extension #55 in v0.1.6. Namely it should only show up when you are in a Python / Groovy file if you have a corresponding configured server.