[fix] Switch applies accessibilityLabel to native control

VoiceOver requires that the aria-label for the checkbox is applied to
the checkbox itself and not a wrapping element.

Fix #1072

packages/react-native-web/src/exports/Switch/__tests__/index-test.js

@@ -7,6 +7,11 @@ import Switch from '..';
 const checkboxSelector = 'input[type="checkbox"]';
 
 describe('components/Switch', () => {
+  test('accessibilityLabel is applied to native checkbox', () => {
+    const component = shallow(<Switch accessibilityLabel="switch" />);
+    expect(component.find(checkboxSelector).prop('aria-label')).toBe('switch');
+  });
+
   describe('disabled', () => {
     test('when "false" a default checkbox is rendered', () => {
       const component = shallow(<Switch />);

packages/react-native-web/src/exports/Switch/index.js

@@ -67,6 +67,7 @@ class Switch extends Component<*> {
 
   render() {
     const {
+      accessibilityLabel,
       activeThumbColor,
       activeTrackColor,
       disabled,
@@ -115,6 +116,7 @@ class Switch extends Component<*> {
     ];
 
     const nativeControl = createElement('input', {
+      accessibilityLabel,
       checked: value,
       disabled: disabled,
       onBlur: this._handleFocusState,