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
```
}
    }
    
    fnArray.splice(iFirstSave, count * 4, OPS.paintInlineImageXObjectGroup);
    argsArray.splice(iFirstSave, count * 4, [
      {
        width: imgWidth,
        height: imgHeight,
        kind: ImageKind.RGBA_32BPP,
        data: imgData,
      },
      map,
    ]);
    return iFirstSave + 1;
  }
);
addState(
  InitialState,
  [OPS.save, OPS.transform, OPS.paintImageMaskXObject, OPS.restore],
  null,
  function iterateImageMaskGroup(context, i) {
    const fnArray = context.fnArray;
    const iFirstSave = context.iCurr - 3;
    const pos = (i - iFirstSave) % 4;
    switch (pos) {
      case 0:
        return fnArray[i] === OPS.save;
      case 1:
        return fnArray[i] === OPS.transform;
      case 2: