[TIMOB-14065] Android: Slider fires 'change' event when it is laid out

*Problem* When a 'change' event is added to a slider like this:

var win1 = Titanium.UI.createWindow({
	backgroundColor: 'gray'
});

var slider = Titanium.UI.createSlider({
    top: 50,
    min: 0,
    max: 100,
    width: '100%',
    value: 50
    });

slider.addEventListener('change', onSliderChange)

function onSliderChange() {
	
	alert('Slider says: Hello World!')
}

win1.add(slider);
win1.open();

While I believe that it makes sense in some cases, in others, it's a problem. In my particular case, if the callback is launched when the window opens, it causes a problem because it should be fired only when *the user* moves the slider. I don't know what you think of this but I believe it makes more sense that the 'change' event is not fired when the slider is simply added to the view.