[TIMOB-17343] iOS: onBlur event on Textfield fired twice when click return button on keyboard

var win = Ti.UI.createWindow({
    backgroundColor : 'white'
});
 
var plainTemplate = {
    childTemplates : [{
        type : 'Ti.UI.TextField',
        bindId : 'button',
        properties : {
            width : '80dp',
            height : '30dp',
            right : '10dp',
            value : "122222",
            borderStyle : Ti.UI.INPUT_BORDERSTYLE_ROUNDED
        },
        events : {
            blur : function() {
                alert("???");
            }
        }
    }]
};
 
var listView = Ti.UI.createListView({
    templates : {
        'plain' : plainTemplate
    },
    defaultItemTemplate : 'plain'
});
 
var data = [];
for (var i = 0; i < 10; i++) {
    data.push({
        rowtitle : {
            text : 'Row ' + (i + 1)
        },
        properties : {
            itemId : 'row' + (i + 1),
            accessoryType : Ti.UI.LIST_ACCESSORY_TYPE_NONE
        }
    });
}
 
var section = Ti.UI.createListSection({
    items : data
});
listView.sections = [section];
win.add(listView);
win.open();