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 (__DEV__) {
     I
     t
    const actQueue = ReactCurrentActQueue.current;
    if (actQueue !== null) {
      actQueue.push(callback);
      return fakeActCallbackNode;
    } else {
      return Scheduler_scheduleCallback(priorityLevel, callback);
    }
  } else {
     I
    return Scheduler_scheduleCallback(priorityLevel, callback);
  }
}
function cancelCallback(callbackNode) {
  if (__DEV__ && callbackNode === fakeActCallbackNode) {
    return;
  }
   I
  return Scheduler_cancelCallback(callbackNode);
}
function shouldForceFlushFallbacksInDEV() {