[TIMOB-11453] iOS: Accessibility: SearchBar: Accessibility does not work for SearchBar on iOS

The accessibility does not work for SearchBar. The Label, Value or Hint are not voiced over. This works fine on Android Steps To Reproduce: 1. Open the application below with voice over ON 2. Touch the SearchBar Actual: After Step 2: The default text is spoken but not the Label, Value and Hint defined Expected: After Step 2: The Label Value and Hint should be spoken by the device

var win = Ti.UI.createWindow({
    title : 'Welcome',
    backgroundColor: "#fff"
});
	var search2 = Titanium.UI.createSearchBar({
		    barColor:'#000', 
		    showCancel:true,
		    height:43,
		    top:100,
		    accessibilityLabel: "Search bar2 label.",
			accessibilityValue: "Search bar2 value.",
			accessibilityHint: "Search bar2 hint"
		});
 win.add(search2);
win.open();