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
```
Math.floor((i - iFirstSave) / 4),
      MAX_IMAGES_IN_INLINE_IMAGES_BLOCK
    );
    if (count < MIN_IMAGES_IN_INLINE_IMAGES_BLOCK) {
      return i - ((i - iFirstSave) % 4);
    }
    
    
    let maxX = 0;
    const map = [];
    let maxLineHeight = 0;
    let currentX = IMAGE_PADDING,
      currentY = IMAGE_PADDING;
    for (let q = 0; q < count; q++) {
      const transform = argsArray[iFirstTransform + (q << 2)];
      const img = argsArray[iFirstPIIXO + (q << 2)][0];
      if (currentX + img.width > MAX_WIDTH) {
        
        maxX = Math.max(maxX, currentX);
        currentY += maxLineHeight + 2 * IMAGE_PADDING;
        currentX = 0;
        maxLineHeight = 0;
      }
      map.push({
        transform,
        x: currentX,
        y: currentY,
        w: img.width,
        h: img.height,
      });