TIMOB-11820: Android: ScrollableView in ScrollView is not working

https://jira.appcelerator.org/browse/TIMOB-11820

Please use the test case in the comments, but set the 'canCancelEvents' property in the scroll view to true.  I have made changes to the scrollable view, so you do not need to set the 'canCancelEvents' on the scrollview.

Please also run the test case in https://jira.appcelerator.org/browse/TIMOB-9955.  Since the user specified 'canCancelEvents' events to be false, the blue view SHOULD be unscrollable.  I have documented that this may be different in iOS in the docs.