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) {
    const DEFAULT_ICON_SIZE = 22; 
    super(parameters);
    const dict = parameters.dict;
    this.data.annotationType = AnnotationType.TEXT;
    if (this.data.hasAppearance) {
      this.data.name = "NoIcon";
    } else {
      this.data.rect[1] = this.data.rect[3] - DEFAULT_ICON_SIZE;
      this.data.rect[2] = this.data.rect[0] + DEFAULT_ICON_SIZE;
      this.data.name = dict.has("Name") ? dict.get("Name").name : "Note";
    }
    if (dict.has("State")) {
      this.data.state = dict.get("State") || null;
      this.data.stateModel = dict.get("StateModel") || null;
    } else {
      this.data.state = null;
      this.data.stateModel = null;
    }
  }
}
class LinkAnnotation extends Annotation {