"OpenShift: Create" fails with "You need at least one project available"

[datho7561]

How to reproduce the error:

1. Login to a cluster
2. Copy https://raw.githubusercontent.com/openshift-labs/starter-guides/ocp-4.6/mongodb-template.yaml into a .yaml file and save it
3. With the file opened in the editor and focused, run "OpenShift: Create" from the command palette
4. Even if you have a project set up, you get the error "You need at least one project available"

I think the root cause is that the underlying method that gets the name of the currently active project doesn't work.