new mars3d.graphic.PolygonEntity({指定了diffHeight后，无法在highlight中修改diffHeight效果

## 问题
new mars3d.graphic.PolygonEntity({指定了diffHeight后，无法在highlight中修改diffHeight效果

```
function addDemoGraphic5(graphicLayer) {
  const graphic = new mars3d.graphic.PolygonEntity({
    positions: [
      [117.261476, 31.799865, 20.8],
      [117.270864, 31.804957, 26],
      [117.289609, 31.804853, 25.4],
      [117.290861, 31.79569, 25.2],
      [117.268148, 31.788912, 18.5]
    ],
    style: {
      height: 50,
      diffHeight: 200,
      materialType: mars3d.MaterialType.PolyGradient,
      materialOptions: {
        color: "#3388cc",
        alphaPower: 1.5
      },
      // 高亮时的样式（默认为鼠标移入，也可以指定type:'click'单击高亮），构造后也可以openHighlight、closeHighlight方法来手动调用
      highlight: {
        type: "click",
        diffHeight: 20,
        materialOptions: {
          color: "#ff0000",
          alphaPower: 1.5
        }
      }
    },
    attr: { remark: "示例5" },
    flyTo:true
  })
  graphicLayer.addGraphic(graphic) // 还可以另外一种写法: graphic.addTo(graphicLayer)
}
```

## 相关链接
 
1.http://mars3d.cn/editor-vue.html?key=ex_7_7_0&id=graphic/entity/polygon

2.相同视角下，单击highlight生效，但是diffHeight没有变化
![http://mars3d.cn/editor-vue.html?key=ex_7_7_0&id=graphic/entity/polygon](https://foruda.gitee.com/images/1713507312584810845/897fe2e9_10844892.png "屏幕截图")
## 期望效果

1.这个highlight修改效果怎么实现呢？

火星科技/Mars3D三维可视化平台

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火星科技/Mars3D三维可视化平台 .gitee-modal { width: 500px !important; }

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