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
invokeEffectFn: (fiber: Fiber) => void,
): void {
  if (__DEV__ && enableStrictEffects) {
     W
     T
    let current = firstChild;
    let subtreeRoot = null;
    while (current !== null) {
      const primarySubtreeFlag = current.subtreeFlags & fiberFlags;
      if (
        current !== subtreeRoot &&
        current.child !== null &&
        primarySubtreeFlag !== NoFlags
      ) {
        current = current.child;
      } else {
        if ((current.flags & fiberFlags) !== NoFlags) {
          invokeEffectFn(current);
        }
        if (current.sibling !== null) {
          current = current.sibling;
        } else {
          current = subtreeRoot = current.return;
        }
      }
    }
  }
}
let didWarnStateUpdateForNotYetMountedComponent: Set<string> | null = null;
function warnAboutUpdateOnNotYetMountedFiberInDEV(fiber) {