Following up on https://github.com/reactjs/reactjs.org/pull/4486#discussion_r834319756 (/cc @acdlite )

React version: 18.0.0-rc.3-next-1159ff619-20220324

## Steps To Reproduce

1. schedule an update (e.g. `setState`) from within `useInsertionEffect` 


Link to code example: https://codesandbox.io/s/naughty-bogdan-boghf6?file=/src/index.js


## The current behavior

Update is applied and no warning is issued.

## The expected behavior

According to https://github.com/reactjs/reactjs.org/pull/4486/files#diff-a1c8ec10dc40c86b4bbd55ad3f0126835bd45e9aa9e56c846a2e28ad6dd6acffR602 `useInsertionEffect` cannot schedule updates. But `setState` seems to "work". Maybe this is just incidental because it's the first render?

I got the impression that this should definitely cause a warning (not implemented) but I wonder if we also should consistently drop updates from `useInsertionEffect`?
const [row, _setRow] = useState(10);
        setRow = _setRow;
        const [scrollDirection, setScrollDirection] = useState('Up');
        const [prevRow, setPrevRow] = useState(null);
        if (prevRow !== row) {
          setScrollDirection(prevRow !== null && row > prevRow ? 'Down' : 'Up');
          setPrevRow(row);
        }
        return <Text text={scrollDirection} />;
      }
      const root = ReactNoop.createRoot();
      await act(async () => {
        root.render(<ScrollView row={10} />);
      });
      expect(Scheduler).toHaveYielded(['Up']);
      expect(root).toMatchRenderedOutput(<span prop="Up" />);
      await act(async () => {
        ReactNoop.discreteUpdates(() => {
          setRow(5);
        });
        setRow(20);
      });
      expect(Scheduler).toHaveYielded(['Up', 'Down']);
      expect(root).toMatchRenderedOutput(<span prop="Down" />);
    });
    
    it('calling startTransition inside render phase', async () => {
      function App() {