message: ModalRoot.setMaskOpacity fix mask ref
diff: @@ -636,10 +636,12 @@ class ModalRoot extends Component {
  cancelAnimationFrame(this.maskAnimationFrame);
  this.maskAnimationFrame = requestAnimationFrame(() => {
  + if (this.maskElementRef.current) {
  const { translateY, translateYCurrent } = modalState;
  const opacity = forceOpacity === null ? 1 - ((translateYCurrent - translateY) / (100 - translateY)) || 0 : forceOpacity;
  this.maskElementRef.current.style.opacity = Math.max(0, Math.min(100, opacity));
  + }
  });
  }
  