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
stopProfilerTimerIfRunningAndRecordDelta,
  syncNestedUpdateFlag,
} from './ReactProfilerTimer.old';
import getComponentNameFromFiber from 'react-reconciler/src/getComponentNameFromFiber';
import ReactStrictModeWarnings from './ReactStrictModeWarnings.old';
import {
  isRendering as ReactCurrentDebugFiberIsRenderingInDEV,
  current as ReactCurrentFiberCurrent,
  resetCurrentFiber as resetCurrentDebugFiberInDEV,
  setCurrentFiber as setCurrentDebugFiberInDEV,
} from './ReactCurrentFiber';
import {
  invokeGuardedCallback,
  hasCaughtError,
  clearCaughtError,
} from 'shared/ReactErrorUtils';
import {
  isDevToolsPresent,
  markCommitStarted,
  markCommitStopped,
  markComponentRenderStopped,
  markComponentSuspended,
  markComponentErrored,
  markLayoutEffectsStarted,
  markLayoutEffectsStopped,
  markPassiveEffectsStarted,
  markPassiveEffectsStopped,
  markRenderStarted,
  markRenderYielded,
  markRenderStopped,