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
```
this.fillColor = "#000000";
    this.strokeColor = "#000000";
    this.patternFill = false;
    
    this.fillAlpha = 1;
    this.strokeAlpha = 1;
    this.lineWidth = 1;
    this.activeSMask = null;
    this.resumeSMaskCtx = null; 
    this.transferMaps = null;
  }
  clone() {
    return Object.create(this);
  }
  setCurrentPoint(x, y) {
    this.x = x;
    this.y = y;
  }
}
/**
 * @type {any}
 */
const CanvasGraphics = (function CanvasGraphicsClosure() {
  
  
  const EXECUTION_TIME = 15;
  
  const EXECUTION_STEPS = 10;
  function putBinaryImageData(ctx, imgData, transferMaps = null) {