[TIMOB-8875] iOS: View SIZE - some child views are not shown when view.width = Ti.UI.SIZE

When views are added to another view which has width = Ti.UI.SIZE set, some of the child views are not displayed. This worked correctly in 1.8.2. See attached screenshot.

Steps to reproduce

Step 1: run the code below on 2.0.1.GA2 Step 2: notice that you can only see the red views that are fully on the screen Step 3: scroll to the side and notice that the rest of the red views are not there Step 4: replace Ti.UI.SIZE with 2000 and run it again Step 5: notice that all of the red views are displayed as expected

Prove this is a regression;

Step 1: "width = 'auto'" in 1.8.2 is the same as "width = Ti.UI.SIZE" in 2.0.1 (they both shrink to the size of their children) Step 2: in the code below comment out "width: Ti.UI.SIZE," and use "width: 'auto'," instead Step 3: run this edited code with 1.8.2 and notice that all of the red views are displayed as expected (see screenshot)

var win = Ti.UI.createWindow({backgroundColor:'white'});
win.open();

var scrollView = Ti.UI.createScrollView({
	contentWidth: 2000,
	backgroundColor: 'black',
	layout: 'horizontal'
});
win.add(scrollView);

var view1 = Ti.UI.createView({
	backgroundColor: 'blue',
	height: 400,
	// for 2.0
	width: Ti.UI.SIZE,
	// for 1.8
	// width: 'auto',
	layout: 'horizontal'
});
scrollView.add(view1);

for(var i = 0, j = 20; i < j; i++){
	view1.add(Ti.UI.createView({
		backgroundColor: 'red',
		width: 100,
		height: 400,
		left: 40
	}));
}