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
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      const endTime = now();
      currentPendingTransitionCallbacks = null;
      scheduleCallback(IdleSchedulerPriority, () =>
        processTransitionCallbacks(
          prevPendingTransitionCallbacks,
          endTime,
          prevRootTransitionCallbacks,
        ),
      );
    }
  }
  if (__DEV__) {
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    if (didScheduleUpdateDuringPassiveEffects) {
      if (root === rootWithPassiveNestedUpdates) {
        nestedPassiveUpdateCount++;
      } else {
        nestedPassiveUpdateCount = 0;
        rootWithPassiveNestedUpdates = root;
      }