fix!: #1262 default width and height on svg

BREAKING CHANGE: default size might change if width or height is missing

src/elements/Svg.tsx

@@ -53,6 +53,8 @@ export default class Svg extends Shape<
   static displayName = 'Svg';
 
   static defaultProps = {
+    width: '100%',
+    height: '100%',
     preserveAspectRatio: 'xMidYMid meet',
   };