Fixes app to build with the new API. Thanks @Willy-JL for doing the hard part!

<3 @0xchocolate (cococode)

Where's the FAP?

The FAP is built automatically for dev and release channels of both official and unleashed firmware. Download the artifact corresponding to your firmware version here: https://github.com/0xchocolate/flipperzero-esp-flasher/actions/runs/7777022154