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.CIRCLE;
    if (!this.appearance) {
      
      const strokeColor = this.color
        ? Array.from(this.color).map(c => c / 255)
        : [0, 0, 0];
      
      let fillColor = null;
      let interiorColor = parameters.dict.getArray("IC");
      if (interiorColor) {
        interiorColor = getRgbColor(interiorColor);
        fillColor = interiorColor
          ? Array.from(interiorColor).map(c => c / 255)
          : null;
      }
      
      /
      /
      const controlPointsDistance = (4 / 3) * Math.tan(Math.PI / (2 * 4));
      this._setDefaultAppearance({
        xref: parameters.xref,
        extra: `${this.borderStyle.width} w`,
        strokeColor,