Auto detected API key in Claude could be confusing

Testing https://github.com/microsoft/vscode/issues/329737

Traditionally, in BYOK, you had to add the API key through our UI. I'm not sure if it's new for the signed out flow feature, but the detection of the API key in the claude settings now makes it so I have an autocontributed BYOK model provider that I can't get rid of. I can hide the models, but if I'm not going through the signed out flow where I get a notification about that being auto detected, I have no clue where it comes from. Perhaps the Model Management UX should have some explainer.