React-Native + iOS图片不显示问题

项目中使用react-native 0.63.4版本及一下时，在iOS14中图片不显示。

需要修改一下文件：react-native/Libraries/Image/RCTUIImageViewAnimated.m

原代码：

- (void)displayLayer:(CALayer *)layer { 
   if (_currentFrame) { 
     layer.contentsScale = self.animatedImageScale; 
     layer.contents = (__bridge id)_currentFrame.CGImage;
   } 
} 

修改为：

- (void)displayLayer:(CALayer *)layer { 
   if (_currentFrame) {
     layer.contentsScale = self.animatedImageScale;
     layer.contents = (__bridge id)_currentFrame.CGImage;
   } else {
     [super displayLayer:layer];
   }
}

参考内容：https://github.com/facebook/react-native/issues/29279#issuecomment-756515665