Make buttons have the highest z-index in case `swipeoutContent` overflows.
Make buttons have the highest z-index in case `swipeoutContent` overflows.

geirman/react-native-swipeout,leoasis/react-native-swipeout,LeeChSien/react-native-swipeout,dancormier/react-native-swipeout,joshjensen/react-native-swipeout,dancormier/react-native-swipeout,agmcleod/react-native-swipeout,agmcleod/react-native-swipeout,LeeChSien/react-native-swipeout,dancormier/react-native-swipeout