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
```
} else {
          for (const depObjId of argsArray[i]) {
            const objsPool = depObjId.startsWith("g_") ? commonObjs : objs;
            
            
            if (!objsPool.has(depObjId)) {
              objsPool.get(depObjId, continueCallback);
              return i;
            }
          }
        }
        i++;
        
        if (i === argsArrayLen) {
          return i;
        }
        
        
        if (chunkOperations && ++steps > EXECUTION_STEPS) {
          if (Date.now() > endTime) {
            continueCallback();
            return i;
          }
          steps = 0;
        }
        
        
      }
    }
    endDrawing() {