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
```
for (let i = 0, ii = inkList.length; i < ii; i++) {
              buffer.push(
                `${inkList[i].x} ${inkList[i].y} ${i === 0 ? "m" : "l"}`
              );
            }
            buffer.push("S");
          }
          return [points[0].x, points[1].x, points[3].y, points[1].y];
        },
      });
    }
  }
}
class HighlightAnnotation extends MarkupAnnotation {
  constructor(parameters) {
    super(parameters);
    this.data.annotationType = AnnotationType.HIGHLIGHT;
    const quadPoints = (this.data.quadPoints = getQuadPoints(
      parameters.dict,
      null
    ));
    if (quadPoints) {
      const resources =
        this.appearance && this.appearance.dict.get("Resources");
      if (!this.appearance || !(resources && resources.has("ExtGState"))) {
        if (this.appearance) {
          /
          /
          /
          /