pybricks.iodevices.LWP3Device: Set LWP3 handle if connection skipped.

When we skip discovery, we'll still need the handle. There is only one handle for LWP3 devices, so we can reuse it.

We might revisit this to skip only the connection but redo the discovery phase for generality.

Author: laurensvalk

pybricks/iodevices/pb_type_iodevices_lwp3device.c

@@ -539,7 +539,12 @@ static void pb_lwp3device_intialize_connection(mp_obj_t self_in, mp_obj_t connec
     else if (err == PBIO_SUCCESS && !want_connection) {
         pb_lwp3device_disconnect(self_in);
     }
-    // Other combinations are already in the desired state, so do nothing else.
+
+    // If we have reconnected virtually, we're skipping the discovery phase,
+    // so use the result from last time.
+    if (pbdrv_bluetooth_peripheral_is_connected(self->peripheral)) {
+        self->lwp3_char_handle = pbdrv_bluetooth_peripheral_discover_characteristic_get_result(self->peripheral);
+    }
 }