Repro: https://codesandbox.io/s/fast-water-4i4jb

Notice the flash. I'd expect `suspended` to be `true` during the high pri render.
const [show, setShow] = React.useState(false);
        _setShow = setShow;
        return show && <AsyncText text="A" />;
      }
      function App() {
        return (
          <Suspense fallback="Loading...">
            <A />
          </Suspense>
        );
      }
      await ReactNoop.act(async () => {
        ReactNoop.render(<App />);
      });
      
      ReactNoop.act(() => {
        Scheduler.unstable_runWithPriority(
          Scheduler.unstable_UserBlockingPriority,
          () => _setShow(true),
        );
      });
    },
  );
  it('normal priority updates suspending do not warn for class components', async () => {
    let show;
    class App extends React.Component {