fix(ios): correctly calculate ios low battery threshold
fix(ios): correctly calculate ios low battery threshold

The battery value is 0.00 to 1.00 but the threshold was 0-100, so it
was an expectations mismatch.

Using threshold of 0.20 instead of 20 makes it work

rebeccahughes/react-native-device-info,rebeccahughes/react-native-device-info,rebeccahughes/react-native-device-info,rebeccahughes/react-native-device-info,rebeccahughes/react-native-device-info,rebeccahughes/react-native-device-info