See the original report in https://github.com/facebook/react/issues/10772#issuecomment-333242375.

The problem is that SVG is case sensitive, and so naïvely setting `tabIndex` and relying on insensitivity won't work with it.

The good news is it seems like `tabindex` is the only valid [SVG attribute](https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute) with this problem. We just missed it because it applies both to HTML and SVG.

I think the fix is to add it back to the whitelist. 
expect(e.value).toBe('Hello');
          
          e.value = 'Goodbye';
          ReactTestUtils.Simulate.change(e);
          expect(changeCount).toBe(1);
          expect(e.value).toBe('Goodbye');
        });
        itClientRenders('a controlled textarea', async render => {
          let changeCount = 0;
          const e = await render(
            <ControlledTextArea onChange={() => changeCount++} />,
          );
          expect(changeCount).toBe(0);
          expect(e.value).toBe('Hello');
          
          e.value = 'Goodbye';
          ReactTestUtils.Simulate.change(e);
          expect(changeCount).toBe(1);
          expect(e.value).toBe('Goodbye');
        });
        itClientRenders('a controlled checkbox', async render => {
          let changeCount = 0;
          const e = await render(
            <ControlledCheckbox onChange={() => changeCount++} />,
          );
          expect(changeCount).toBe(0);
          expect(e.checked).toBe(true);
          
          e.checked = false;
          ReactTestUtils.Simulate.change(e);