emit the DeviceListReceived event

Author: slonkazoid

crates/buttplug_tests/tests/util/device_test/client/client_v3/client_event_loop.rs

@@ -309,6 +309,7 @@ where
           let device = self.create_client_device(d);
           self.send_client_event(ButtplugClientEvent::DeviceAdded(device));
         }
+        self.send_client_event(ButtplugClientEvent::DeviceListReceived);
         true
       }
     }