fix: Persist the click event when handling beforeOnClick

Author: Kashuab

src/ShareButton.tsx

@@ -155,6 +155,9 @@ export default class ShareButton<LinkOptions> extends Component<Props<LinkOption
     event.preventDefault();
 
     if (beforeOnClick && !ignoreBeforeOnClick) {
+      // Make the event object usuable in the following handleClick call
+      event.persist();
+
       const returnVal = beforeOnClick();
 
       if (isPromise(returnVal)) {