Attach (recommended) or Link to PDF file here: 
[A Sample PDF Clean 0 degree with all annotations-original-rotated.pdf](https://github.com/mozilla/pdf.js/files/6551789/A.Sample.PDF.Clean.0.degree.with.all.annotations-original-rotated.pdf)

Configuration:
- Web browser and its version: all browsers, tested with Chrome and Firefox latest versions.
- Operating system and its version: tested in Windows 10
- PDF.js version: current (online version)

Steps to reproduce the problem:
1. Visit https://mozilla.github.io/pdf.js/web/viewer.html
2. Upload the file above
3. Notice that several annotations such as arrow, freehand & polyline are missing (compared to Acrobat Reader)
![image](https://user-images.githubusercontent.com/45581023/119781014-11d35d00-befd-11eb-8daa-64f15374cf5b.png)


What is the expected behavior?
- Should display all annotations accordingly to Acrobat Reader

What went wrong? 
- Several annotations are missing such as arrow, freehand & polyline
- Opacity property is not supported and cannot be retrieved via getAnnotations 

constructor(parameters) {
    super(parameters);
    this.data.annotationType = AnnotationType.HIGHLIGHT;
    const quadPoints = (this.data.quadPoints = getQuadPoints(
      parameters.dict,
      null
    ));
    if (quadPoints) {
      const resources =
        this.appearance && this.appearance.dict.get("Resources");
      if (!this.appearance || !(resources && resources.has("ExtGState"))) {
        if (this.appearance) {
          /
          /
          /
          /
          warn("HighlightAnnotation - ignoring built-in appearance stream.");
        }
        /
        const fillColor = this.color
          ? Array.from(this.color).map(c => c / 255)
          : [1, 1, 0];
        this._setDefaultAppearance({
          xref: parameters.xref,
          fillColor,
          blendMode: "Multiply",
          pointsCallback: (buffer, points) => {