react-native-camera

fix(ios): only check permission descriptions availability in debug build (#2070), Fixes #2069

It seems like Apple is rejecting apps that access a Info.plist usage description that is not available. This conflicts with enhanced developer warnings I implemented in #2048.

To fix that I changed the implementation to only check if the usage descriptions are available in `DEBUG` mode. I also added a note developer warnings, that the app might crash in release mode because using a feature that requires a usage description without having one provided will result in an application crash).