CHW-4947 CLIDeviceGrantConflict

device grant state changed between lookup and approval; restart the `chainsaw auth login` flow

Default message: device grant state changed between lookup and approval; restart the chainsaw auth login flow
HTTP status: 409 (client)

Problem. /device/approve raced with expiry / consume between the lookup and the approve call. Cause. Concurrent approval, or grant expired during the request. Fix. Restart the flow from the CLI. HTTP 409.