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
```
xref,
          popupRef,
          pdfManagerMock,
          idFactoryMock
        
        expect(data.annotationType).toEqual(AnnotationType.POPUP
        // We should not modify the `annotationFlags` returned through
        // e.g., the API.
        expect(data.annotationFlags).toEqual(25
        // The popup should inle` property of the parent.
        expect(viewable).toEqual(true
      }
    
    it(
      "should correctly inherit Contents from group-master annotation " +
        "if parent has ReplyType == Group",
      async function () {
        const annotationRef = Ref.get(819, 0
        const annotationDict = new Dict(
        annotationDict.set("Type", Name.get("Annot")
        annotationDict.set("Subtype", Name.get("Text")
        annotationDict.set("T", "Correct Title"
        annotationDict.set("Contents", "Correct Text"
        annotationDict.set("M", "D:20190423"
        annotationDict.set("C", [0, 0, 1]
        const replyRef = Ref.get(820, 0
        const replyDict = new Dict(
        replyDict.set("Type", Name.get("Annot")
        replyDict.set("Subtype", Name.get("Text")
        replyDict.set("IRT", annotationRef