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

Notice the flash. I'd expect `suspended` to be `true` during the high pri render.
let nextChildren;
  if (
    didCaptureError &&
    typeof Component.getDerivedStateFromError !== 'function'
  ) {
    
    
    
    
    
    nextChildren = null;
    if (enableProfilerTimer) {
      stopProfilerTimerIfRunning(workInProgress);
    }
  } else {
    if (__DEV__) {
      setIsRendering(true);
      nextChildren = instance.render();
      if (
        debugRenderPhaseSideEffectsForStrictMode &&
        workInProgress.mode & StrictMode
      ) {
        instance.render();
      }
      setIsRendering(false);
    } else {
      nextChildren = instance.render();
    }
  }