[react-native] add accessibilityElementsHidden prop

types/react-native/index.d.ts

@@ -1797,6 +1797,13 @@ export interface AccessibilityPropsAndroid {
 }
 
 export interface AccessibilityPropsIOS {
+    /**
+     * A Boolean value indicating whether the accessibility elements contained within this accessibility element
+     * are hidden to the screen reader.
+     * @platform ios
+     */
+    accessibilityElementsHidden?: boolean;
+
     /**
      * Accessibility traits tell a person using VoiceOver what kind of element they have selected.
      * Is this element a label? A button? A header? These questions are answered by accessibilityTraits.

types/react-native/test/index.tsx

@@ -598,3 +598,13 @@ class StylePropsTest extends React.PureComponent {
 }
 
 const listViewDataSourceTest = new ListView.DataSource({rowHasChanged: () => true})
+
+class AccessibilityViewHidingTest extends React.Component {
+    render() {
+        return (
+            <View accessibilityElementsHidden importantForAccessibility="no-hide-descendants">
+                <View />
+            </View>
+        );
+    }
+}