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
}
    } else {
       
       
       
      const next = unwindWork(current, completedWork, subtreeRenderLanes);
       
      if (next !== null) {
         
         
         
         
        next.flags &= HostEffectMask;
        workInProgress = next;
        return;
      }
      if (
        enableProfilerTimer &&
        (completedWork.mode & ProfileMode) !== NoMode
      ) {
         
        stopProfilerTimerIfRunningAndRecordDelta(completedWork, false);
         
        let actualDuration = completedWork.actualDuration;
        let child = completedWork.child;
        while (child !== null) {
          actualDuration += child.actualDuration;
          child = child.sibling;
        }
        completedWork.actualDuration = actualDuration;