Add a flag for autoselection

[kimadeline]

Closes #16735

[kimadeline]

It's a rather small change, I'm going to merge it in 24 hours unless you have blocking concerns.

[karrtikr]

This should probably be workspace folder based key, similar to getWorkspaceState(). In a multiroot scenario, we want to ensure we use ignoreCache as true for each workspace folder in the current workspace.

But I think the code here says that we only use ignoreCache as true once for the entire workspace, which is not what we want.

[kimadeline]

Do you remember if using createWorkspacePersistentState is enough to differentiate between workspaces in a multiroot scenario?

[karrtikr]

I'm not sure, but if it's referring to the workspace, and not the workspace folder as the name suggests, it's not enough.