Unable to make Tabs a controlled component

[iqra-javed]

Describe the bug
Unable to make Tabs component a controlled component — passing index does not update active tab

To Reproduce
Steps to reproduce the behavior:

1. store tabIndex in local state
2. pass tabIndex to the index prop on Tabs component
3. create an onChange handler for Tabs component to update tabIndex: onChange={(index) => setTabIndex(index)}

Expected behavior
passing index and onChange should allow owner to control active index state