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

Notice the flash. I'd expect `suspended` to be `true` during the high pri render.
state = {show: false};
      render() {
        show = () => this.setState({show: true});
        return (
          <Suspense fallback="Loading...">
            {this.state.show && <AsyncText text="A" />}
          </Suspense>
        );
      }
    }
    await ReactNoop.act(async () => {
      ReactNoop.render(<App />);
    });
    
    ReactNoop.act(() => {
      Scheduler.unstable_runWithPriority(
        Scheduler.unstable_UserBlockingPriority,
        () => show(),
      );
    });
  });
  it('does not warn about wrong Suspense priority if no new fallbacks are shown', async () => {
    let showB;
    class App extends React.Component {
      state = {showB: false};
      render() {