[native] Update SafeAreaView for React Nav 5
[native] Update SafeAreaView for React Nav 5

Can't import directly from React Nav anymore, using `react-native-safe-area-context` now

Ashoat/squadcal,Ashoat/squadcal,Ashoat/squadcal,Ashoat/squadcal,Ashoat/squadcal,Ashoat/squadcal,Ashoat/squadcal