Better SafeAreaView

[diegolmello]

SafeAreaView is a thing just for iPhone devices with notch (iPhone X*).
It doesn't apply to Android.
That said, looking at react-native-safe-area-view implementation, we can see they do a heavy job to identify the device type.

Long story short, we already have our own native implementation returning if it's iPhoneX method and we could only run react-native-safe-area-view only if it's true.
Return an usual <View /> otherwise.
It wouldn't do heavy calculations unnecessary.

It needs investigation and memory debugging to confirm it really works and it does have benefits.

[weijia-yu]

@diegolmello should we add safe area for android devices too, there are more and more notch android devices

[diegolmello]

Alpha version from react-native-safe-area-view seems to do the trick.
It uses react-native-safe-area-context.
We should try it.