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
```
if (this.data.kidIds) {
      return {
        id: this.data.id,
        actions: this.data.actions,
        name: this.data.fieldName,
        type: "",
        kidIds: this.data.kidIds,
        page: this.data.pageIndex,
      };
    }
    return null;
  }
  /**
   * Reset the annotation.
   *
   * This involves resetting the various streams that are either cached on the
   * annotation instance or created during its construction.
   *
   * @public
   * @memberof Annotation
   */
  reset() {