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
```
"0.00 -5.00 Td () Tj\n" +
        "0.00 -5.00 Td " +
        "(Nulla consectetur, ligula in tincidunt placerat, velit ) Tj\n" +
        "0.00 -5.00 Td " +
        "(augue consectetur orci, sed mattis libero nunc ut massa.) Tj\n" +
        "0.00 -5.00 Td " +
        "(Etiam facilisis tempus interdum.) Tj ET Q EMC";
      const annotation = await AnnotationFactory.create(
        xref,
        textWidgetRef,
        pdfManagerMock,
        idFactoryMock
      
      const annotationStorage = new Map(
      annotationStorage.set(annotation.data.id, {
        value:
          "Lorem ipsum dolor sit amet, consectetur adipiscing elit.\r" +
          "Aliquam vitae felis ac lectus bibendum ultricies quis non diam.\n" +
          "Morbi id porttitor quam, a iaculis dui.\r\n" +
          "Pellentesque habitant morbi tristique senectus et " +
          "netus et malesuada fames ac turpis egestas.\n\r\n\r" +
          "Nulla consectetur, ligula in tincidunt placerat, " +
          "velit augue consectetur orci, sed mattis libero nunc ut massa.\r" +
          "Etiam facilisis tempus interdum.",
      }
      const appearance = await annotation._getAppearance(
        partialEvaluator,
        task,
        annotationStorage