[ios] Fix crash on nested svg
[ios] Fix crash on nested svg

react-native-community/react-native-svg,magicismight/react-native-svg,magicismight/react-native-svg,msand/react-native-svg,msand/react-native-svg,react-native-community/react-native-svg,react-native-community/react-native-svg,magicismight/react-native-svg,magicismight/react-native-art-svg,magicismight/react-native-art-svg,magicismight/react-native-svg,react-native-community/react-native-svg,msand/react-native-svg,msand/react-native-svg,react-native-community/react-native-svg,magicismight/react-native-svg