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 acroForm = this.catalog.acroForm;
    if (!acroForm || !acroForm.has("CO")) {
      return shadow(this, "calculationOrderIds", null);
    }
    const calculationOrder = acroForm.get("CO");
    if (!Array.isArray(calculationOrder) || calculationOrder.length === 0) {
      return shadow(this, "calculationOrderIds", null);
    }
    const ids = calculationOrder.filter(isRef).map(ref => ref.toString());
    if (ids.length === 0) {
      return shadow(this, "calculationOrderIds", null);
    }
    return shadow(this, "calculationOrderIds", ids);
  }
}
export { Page, PDFDocument };