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

Notice the flash. I'd expect `suspended` to be `true` during the high pri render.
'Effect [B]',
      ]);
    } else {
      expect(Scheduler).toFlushAndYield([
        'B',
        'Destroy Layout Effect [Loading...]',
        'Destroy Effect [Loading...]',
        'Layout Effect [B]',
        'Effect [B]',
      ]);
    }
    
    ReactNoop.renderLegacySyncRoot(<App text="B2" />, () =>
      Scheduler.unstable_yieldValue('Commit root'),
    );
    expect(Scheduler).toHaveYielded([
      'A',
      'Suspend! [B2]',
      'C',
      'Loading...',
      
      
      'Layout Effect [Loading...]',
      'Commit root',
    ]);
    
    expect(Scheduler).toFlushAndYield([
      
      
      'Effect [Loading...]',