test: add frontend board redux test

[rayatn1011]

No description provided.

[kayac-chang]

Because the Board update will be batched to the next frame update.
see
So we have to wait until after the next frame is updated.

Please add the nextFrame function into ~/test/utils/index.tsx.

export function nextFrame() {
  return new Promise((resolve) => {
    requestAnimationFrame(resolve);
  });
}

And add the nextFrame function in the act callback.

    await act(async () => {
      store.dispatch(/* something will update board */);
      
      // wait next frame
      await nextFrame();
    });

[kayac-chang]

fixed by #107, closed.