[TIMOB-26372] iOS: Assigning text value in change event causes duplicated input on TextView

*Steps to reproduce the behavior* Add the following code to your app.js of a classic project:

var win = Ti.UI.createWindow({
    backgroundColor: '#fff'
});
const textArea = Ti.UI.createTextArea({
	backgroundColor: 'lightgray',
	height: 100,
	width: 200
});
textArea.addEventListener('change', (e) => {
	// This will trigger an additional change event and duplicate input
	textArea.value = e.value;
});
win.add(textArea);
win.open();

*Actual behavior* Any input will be duplicated in the TextView itself. For example pressing 'H' will result in 'HH' appearing in the TextView. *Expected behavior* The value of the text view can be assigned without any side effects. *Additional notes* This is required for the two-way binding in Vue.js. The iOS TextField does not have this issues, neither does any of the text widgets on Android.