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
if (root === workInProgressRoot) {
       
       
       
       
       
       
      if (
        deferRenderPhaseUpdateToNextBatch ||
        (executionContext & RenderContext) === NoContext
      ) {
        workInProgressRootInterleavedUpdatedLanes = mergeLanes(
          workInProgressRootInterleavedUpdatedLanes,
          lane,
        );
      }
      if (workInProgressRootExitStatus === RootSuspendedWithDelay) {
         
         
         
         
         
         
        markRootSuspended(root, workInProgressRootRenderLanes);
      }
    }
    ensureRootIsScheduled(root, eventTime);
    if (
      lane === SyncLane &&
      executionContext === NoContext &&