Fix for: BHV-13452

### Problem

Currently, having moon.SelectableItem's in a moon.DataRepeater and attempting to use selection support is not possible.

### Reason

There is mutually-exclusive code executing for the `ontap` event - with moon.SelectableItem's handler going second and inverting the selection case already handled by the repeater.

### Solution

Add an optional API flag for use within the repeater that, when set to `false`, will allow the repeater exclusive access for handling the `ontap` event and selection.