Push notifications not working on Android 13

Tried with a campaign + quick test via FCM. They don't arrive, just fail silently.

Android 13 changed some things. I think our method should still work, especially since we targetSdk < 33.

This Capacitor issue says something else:

See this commit for a workaround.
The PR might not work for us, even if it lands it time, because we're stuck on Capacitor 2.

Edited Dec 21, 2023 by Jakob Wierzba