[BUG] `npm config` throws/becomes unusable after setting `workspaces` or `workspace` config

[darcyclarke]

Current Behavior:

• npm config throws errors & becomes unusable when it sees defined workspaces or workspace config

Expected Behavior:

• npm config should be exempt from this default behavior & not throw errors when it sees defined workspaces or workspace options (its core function/utility is to get/set that config)

Steps To Reproduce:

1. npm config set workspaces=true
2. npm config ... throws

Environment:

• OS: osx
• Node: 10.24.0
• npm: 7.7.1

[wraithgar]

This should be fixed in v7.7.3