ListView event itemTap differences with the documentation about nativescript-vue

[rigor789]

Vue2 added this explicitly, we can do the same in vue3 - because core List doesn't include the item in the event, just the index.

[vallemar]

@rigor789 I think it's good that I don't add it, but then the problem is the documentation, right? Could you send a pr to change event.item to event.index

[rigor789]

The current docs are for v2 still.