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
```
}
    }
  }
  get fieldObjects() {
    if (!this.formInfo.hasFields) {
      return shadow(this, "fieldObjects", Promise.resolve(null));
    }
    const allFields = Object.create(null);
    const fieldPromises = new Map();
    for (const fieldRef of this.catalog.acroForm.get("Fields")) {
      this._collectFieldObjects("", fieldRef, fieldPromises);
    }
    const allPromises = [];
    for (const [name, promises] of fieldPromises) {
      allPromises.push(
        Promise.all(promises).then(fields => {
          fields = fields.filter(field => !!field);
          if (fields.length > 0) {
            allFields[name] = fields;
          }
        })
      );
    }
    return shadow(
      this,
      "fieldObjects",
      Promise.all(allPromises).then(() => allFields)
    );
  }
  get hasJSActions() {