Bug fix - WheelPicker picker children items `testID` prop not passed

[israelko]

Description

Currently, when WheelPicker Picker items are provided as Picker.Item children, the item's testID prop is not passed to the picker items, which making it hard to test.

This PR aims to fix that by passing the item's testID prop down to the WheelPicker items.

Changelog

Picker.Item testID prop now being passed to the WheelPicker item's testID prop.

Additional info

[israelko]

#rebuild

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.