Batched state changes are not flushed if the promise code changes the DOM (= attaching an iframe). Reproduceable with Safari.

React version: 18.1.0

## Steps To Reproduce

1. Open [codepen](https://codepen.io/kh-viewar/pen/wvpVLxM) with Safari.
2. Click "Upload"
3. => "Spinner" text does not render while Promise is in pending

Link to code example:

https://codepen.io/kh-viewar/pen/wvpVLxM

## The current behavior

State changes are not executed.

## The expected behavior

State should change to true and render spinner component. After promise is resolved (2 seconds timeout), state should switch back to false and spinner component should unmount.

## Original discussion

https://github.com/facebook/react/issues/24365
root.current = finishedWork;
     
     
     
    if (__DEV__) {
      if (enableDebugTracing) {
        logLayoutEffectsStarted(lanes);
      }
    }
    if (enableSchedulingProfiler) {
      markLayoutEffectsStarted(lanes);
    }
    commitLayoutEffects(finishedWork, root, lanes);
    if (__DEV__) {
      if (enableDebugTracing) {
        logLayoutEffectsStopped();
      }
    }
    if (enableSchedulingProfiler) {
      markLayoutEffectsStopped();
    }
    if (enableProfilerTimer && enableProfilerNestedUpdateScheduledHook) {
      rootCommittingMutationOrLayoutEffects = null;
    }
     
     
    requestPaint();
    executionContext = prevExecutionContext;
     
    setCurrentUpdatePriority(previousPriority);