Configuration:
- PDF.js version: 2.0.550

Steps to reproduce the problem:
1. Render document in SVG mode `renderMode="svg"`

What is the expected behavior? (add screenshot)
Rendering annotations same way as they rendered on canvas

What went wrong? (add screenshot)
```
Warning: Unimplemented operator beginAnnotations
Warning: Unimplemented operator endAnnotations
```
const dict = new Dict();
    dict.set("BaseFont", Name.get("ZapfDingbats"));
    dict.set("Type", Name.get("FallbackType"));
    dict.set("Subtype", Name.get("FallbackType"));
    dict.set("Encoding", Name.get("ZapfDingbatsEncoding"));
    return shadow(this, "fallbackFontDict", dict);
  }
}
class ChoiceWidgetAnnotation extends WidgetAnnotation {
  constructor(params) {
    super(params);
    
    
    
    
    
    
    
    
    
    this.data.options = [];
    const options = getInheritableProperty({ dict: params.dict, key: "Opt" });