Add suppressions for Flow v0.53.0 before React changes

Reviewed By: avikchaudhuri

Differential Revision: D5648801

fbshipit-source-id: c4eb1bee198a177b69b6e9414111ce957b4d27ff

RNTester/js/ModalExample.js

@@ -52,6 +52,9 @@ class Button extends React.Component {
         onHideUnderlay={this._onUnhighlight}
         onPress={this.props.onPress}
         onShowUnderlay={this._onHighlight}
+        /* $FlowFixMe(>=0.53.0 site=react_native_fb) This comment suppresses an
+         * error found when Flow v0.53 was deployed. To see the error delete
+         * this comment and run Flow. */
         style={[styles.button, this.props.style]}
         underlayColor="#a9d9d4">
           <Text style={[styles.buttonText, colorStyle]}>{this.props.children}</Text>