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 (prevDispatcher === null) {
     
     
     
    return ContextOnlyDispatcher;
  } else {
    return prevDispatcher;
  }
}
function popDispatcher(prevDispatcher) {
  ReactCurrentDispatcher.current = prevDispatcher;
}
export function markCommitTimeOfFallback() {
  globalMostRecentFallbackTime = now();
}
export function markSkippedUpdateLanes(lane: Lane | Lanes): void {
  workInProgressRootSkippedLanes = mergeLanes(
    lane,
    workInProgressRootSkippedLanes,
  );
}
export function renderDidSuspend(): void {
  if (workInProgressRootExitStatus === RootInProgress) {
    workInProgressRootExitStatus = RootSuspended;
  }
}
export function renderDidSuspendDelayIfPossible(): void {
  if (
    workInProgressRootExitStatus === RootInProgress ||
    workInProgressRootExitStatus === RootSuspended ||