Reconfigure if cli config was deleted from disk

[code-asher]

You can get into a slightly weird state where VS Code is logged in but the cli configuration has been deleted. We could try logging the cli back in when this happens.

In my case, it happened when I was trying to update the plugin manually and it wiped the state directory in between. The plugin was still logged in, but when I tried to connect it said I was not logged in, which was confusing.

Or maybe we could at least update the wording to be "cli needs to be configured again".