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
```
const normalAppearanceStream = new StringStream("0.1 0.2 0.3 rg"
      normalAppearanceStream.dict = normalAppearanceDict;
      appearanceStatesDict.set("N", normalAppearanceStream
      textWidgetDict.set("AP", appearanceStatesDict
      const xref = new XRefMock([
        { ref: textWidgetRef, data: textWidgetDict },
        helvRefObj,
      ]
      const task = new WorkerTask("test print"
      partialEvaluator.xref = xref;
      const annotation = await AnnotationFactory.create(
        xref,
        textWidgetRef,
        pdfManagerMock,
        idFactoryMock
      
      const annotationStorage = new Map(
      const operatorList = await annotation.getOperatorList(
        partialEvaluator,
        task,
        false,
        annotationStorage
      
      expect(operatorList.argsArray.length).toEqual(3
      expect(operatorList.fnArray).toEqual([
        OPS.beginAnnotation,
        OPS.setFillRGBColor,
        OPS.endAnnotation,
      ]
      expect(operatorList.argsArray[1]).toEqual(