Fix some existing type definitions:
Fix some existing type definitions:

It seems like these were already wrong?
- `Symbols` -> `Symbol`
- `Use` errors unless `width` and `height` are string?
- `Svg` errors if `width` and `height` are not provided?

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