Switching build device type to "Remote Linux" doesn't select a suitable device

Following the steps from tests/manual/remotelinux/remotelinux-testplan.md does not lead to the automatic selection of the existing device, the combobox is empty.

1. 1. ## Create a kit for building
      1. Go to `Edit -> Preferences -> Kits`.
      2. Create a new kit and set `Build Device` to `Remote Linux` device. The device created
      in the previous step should get chosen automatically in the `Device` combo box.
      3. Press the "OK" button.