Repro: https://codesandbox.io/s/fast-water-4i4jb

Notice the flash. I'd expect `suspended` to be `true` during the high pri render.
const currentPrimaryChild = current.child;
      if (nextDidTimeout) {
         
         
        const nextFallbackChildren = nextProps.fallback;
        const primaryChildFragment = createFiberFromFragment(
           
           
          null,
          mode,
          NoWork,
          null,
        );
        primaryChildFragment.return = workInProgress;
        primaryChildFragment.child = currentPrimaryChild;
        if (currentPrimaryChild !== null) {
          currentPrimaryChild.return = primaryChildFragment;
        }
         
         
         
         
        if ((workInProgress.mode & BlockingMode) === NoMode) {
           
           
          const progressedState: SuspenseState = workInProgress.memoizedState;
          const progressedPrimaryChild: Fiber | null =
            progressedState !== null
              ? (workInProgress.child: any).child