Under certain conditions we decrement the `__count` attribute too often, which can result in `onInteractionScheduledWorkCompleted` being called prematurely and/or more than once for a given interaction.

- [x] Track interactions scheduled during (sync) render phase.
- [x] Do not double-decrement suspense loads within a sync render.
- [x] Do not decrement sync commits that are waiting on suspense when the `Placeholder` is past its expiration.
- [x] Properly decrement pending interaction count when a suspense resource loads before its placeholder is shown.
- [x] Add test with high priority render between suspended and resolved suspense states (for both sync and async rendering)
if (isBatchingUpdates && !isUnbatchingUpdates) {
    isUnbatchingUpdates = true;
    try {
      return fn(a);
    } finally {
      isUnbatchingUpdates = false;
    }
  }
  return fn(a);
}
function flushSync<A, R>(fn: (a: A) => R, a: A): R {
  invariant(
    !isRendering,
    'flushSync was called from inside a lifecycle method. It cannot be ' +
      'called when React is already rendering.',
  );
  const previousIsBatchingUpdates = isBatchingUpdates;
  isBatchingUpdates = true;
  try {
    return syncUpdates(fn, a);
  } finally {
    isBatchingUpdates = previousIsBatchingUpdates;
    performSyncWork();
  }
}
function interactiveUpdates<A, B, R>(fn: (A, B) => R, a: A, b: B): R {