You can't. AirPods Pro is an Apple product, and they don't support the reverse charging feature of Huawei phones. Huawei's reverse charging function is applicable to other devices that support wireless charging, such as mobile phones and earphones. If you want to use Huawei's reverse charging function to charge the AirPods Pro, you may need to use an adapter or other charging device to do so.
Yes, because its own jack is supporting this charging setting.