[TIMOB-20518] iOS: Picker is not being shown with width: Ti.UI.FILL

     var win = Ti.UI.createWindow({
           width: Ti.UI.FILL,
           title:'title'
       });
       win.backgroundColor = 'black';
    
       var picker = Ti.UI.createPicker({
           width: Ti.UI.FILL,
           height:700
       });
    
       if (Ti.Platform.osname === 'tizen') {
           // On Mobile Web/Tizen, by default, the picker fills the entire view it is contained,
           // unless the size is provided.
           picker.width = 100;
           picker.height = 110;
           picker.color = '#fc0';
       }
    
       var column = Ti.UI.createPickerColumn();
       column.addRow(Ti.UI.createPickerRow({title:'Bananas',custom_item:'b'}));
       column.addRow(Ti.UI.createPickerRow({title:'Strawberries',custom_item:'s'}));
       column.addRow(Ti.UI.createPickerRow({title:'Mangos',custom_item:'m'}));
       column.addRow(Ti.UI.createPickerRow({title:'Grapes',custom_item:'g'}));
    
       picker.add(column);
    
       // turn on the selection indicator (off by default)
       picker.selectionIndicator = true;
    
       win.add(picker);
    
       var label = Ti.UI.createLabel({
           text:'Make a move',
           top:10,
           width:'auto',
           height:'auto',
           textAlign:'center',
           color:'white'
       });
       win.add(label);
    
    
       picker.addEventListener('change',function(e)
       {
           Ti.API.info("You selected row: "+e.row+", column: "+e.column+", custom_item: "+e.row.custom_item);
           label.text = "row index: "+e.rowIndex+", column index: "+e.columnIndex;
       });
       win.open();