Attach (recommended) or Link to PDF file here:
[mytestfile.pdf](https://github.com/mozilla/pdf.js/files/7190033/mytestfile.pdf)

Configuration:
- Web browser and its version: Firefox nightly
- Operating system and its version: linux debian

Steps to reproduce the problem:
1. Open the pdf  
2. Click on the yellow area

What is the expected behavior? (add screenshot)
The text layout should be RTL.

What went wrong? (add screenshot)
The text layout is LTR.

It works correctly in evince and in acrobat.
I added a `dir="rtl"` on the `p` element in using devtools and the rendering is the same as in acrobat.

* Whether the loading task is destroyed or not.
     * @type {boolean}
     */
    this.destroyed = false;
    /**
     * Callback to request a password if a wrong or no password was provided.
     * The callback receives two parameters: a function that should be called
     * with the new password, and a reason (see {@link PasswordResponses}).
     * @type {function}
     */
    this.onPassword = null;
    /**
     * Callback to be able to monitor the loading progress of the PDF file
     * (necessary to implement e.g. a loading bar).
     * The callback receives an {@link OnProgressParameters} argument.
     * @type {function}
     */
    this.onProgress = null;
    /**
     * Callback for when an unsupported feature is used in the PDF document.
     * The callback receives an {@link UNSUPPORTED_FEATURES} argument.
     * @type {function}
     */
    this.onUnsupportedFeature = null;
  }
  /**
   * Promise for document loading task completion.
   * @type {Promise<PDFDocumentProxy>}
   */
  get promise() {