MapView中设置center无效，设置coordinate有效

[Deain]

版本信息：

    "react": "16.13.1",
    "react-native": "0.63.0",
    "react-native-amap3d": "^2.0.1"

示例代码：

class Map extends Component {
  render() {
    return (
      <MapView
        style={{width: '100%', height: '100%'}}
        center={{"latitude": 31.207646, "longitude": 121.49296}}
      >
      </MapView>
    );
  }
}

截图：