android: workaround RN permissions bug
android: workaround RN permissions bug

On Android < M the request function would return a boolean instead of
returning a defined constant. This was fixed on RN 0.57.

https://github.com/facebook/react-native/commit/4e1abdd74dc4127a86d62e7750d01d39bb781c08

zxcpoiu/react-native-webrtc,zxcpoiu/react-native-webrtc,zxcpoiu/react-native-webrtc,zxcpoiu/react-native-webrtc,zxcpoiu/react-native-webrtc,zxcpoiu/react-native-webrtc