fix(web): Allow createElement & unstable_createElement usage (#1240)

src/ReactNativeSVG.web.ts

@@ -1,10 +1,18 @@
 // @ts-ignore
 import * as React from 'react';
-import { createElement, GestureResponderEvent } from 'react-native';
+import { GestureResponderEvent } from 'react-native';
 import { NumberArray, NumberProp } from './lib/extract/types';
 import SvgTouchableMixin from './lib/SvgTouchableMixin';
 import { resolve } from './lib/resolve';
 
+const createElement: <P>(
+  type: React.ReactType,
+  props?: P,
+  ...children: React.ReactNode[]
+) => React.ReactElement<P> =
+  require('react-native').unstable_createElement ||
+  require('react-native').createElement;
+
 type BlurEvent = Object;
 type FocusEvent = Object;
 type PressEvent = Object;