[RadListView][Android] crash if groupingFunction set from xml !

[kefahB]

Hi,

I have the nativescript-ui-listview: 10. and having this issue, I've updated the plugin to 14.2.4 and still having same issue :

To reproduce :

• Set groupingFunction from xml
• click add this will causing crash

If you set the groupingFunction from the view model it will not crash

her sample project