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._stats) {
        this._stats.timeEnd("Rendering");
        this._stats.timeEnd("Overall");
      }
    };
    const internalRenderTask = new InternalRenderTask({
      callback: complete,
      
      params: {
        canvasContext,
        viewport,
        transform,
        imageLayer,
        background,
      },
      objs: this.objs,
      commonObjs: this.commonObjs,
      operatorList: intentState.operatorList,
      pageIndex: this._pageIndex,
      canvasFactory: canvasFactoryInstance,
      useRequestAnimationFrame: renderingIntent !== "print",
      pdfBug: this._pdfBug,
    });
    (intentState.renderTasks ||= new Set()).add(internalRenderTask);
    const renderTask = internalRenderTask.task;
    Promise.all([
      intentState.displayReadyCapability.promise,
      optionalContentConfigPromise,
    ])