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
fiber: Fiber,
  hasPassiveEffects: boolean,
) {
  if (__DEV__ && enableStrictEffects) {
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    setCurrentDebugFiberInDEV(fiber);
    invokeEffectsInDev(fiber, MountLayoutDev, invokeLayoutEffectUnmountInDEV);
    if (hasPassiveEffects) {
      invokeEffectsInDev(
        fiber,
        MountPassiveDev,
        invokePassiveEffectUnmountInDEV,
      );
    }
    invokeEffectsInDev(fiber, MountLayoutDev, invokeLayoutEffectMountInDEV);
    if (hasPassiveEffects) {
      invokeEffectsInDev(fiber, MountPassiveDev, invokePassiveEffectMountInDEV);
    }
    resetCurrentDebugFiberInDEV();
  }
}
function invokeEffectsInDev(
  firstChild: Fiber,
  fiberFlags: Flags,