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
```
},
        reason => {
          intentState.streamReader = null;
          if (this._transport.destroyed) {
            return; 
          }
          if (intentState.operatorList) {
            
            intentState.operatorList.lastChunk = true;
            for (const internalRenderTask of intentState.renderTasks) {
              internalRenderTask.operatorListChanged();
            }
            this._tryCleanup();
          }
          if (intentState.displayReadyCapability) {
            intentState.displayReadyCapability.reject(reason);
          } else if (intentState.opListReadCapability) {
            intentState.opListReadCapability.reject(reason);
          } else {
            throw reason;
          }
        }
      );
    };
    pump();
  }
  /**
   * @private
   */
  _abortOperatorList({ intentState, reason, force = false }) {