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.

*   into. Defaults to the current document.
 * @property {boolean} [disableRange] - Disable range request loading of PDF
 *   files. When enabled, and if the server supports partial content requests,
 *   then the PDF will be fetched in chunks. The default value is `false`.
 * @property {boolean} [disableStream] - Disable streaming of PDF file data.
 *   By default PDF.js attempts to load PDF files in chunks. The default value
 *   is `false`.
 * @property {boolean} [disableAutoFetch] - Disable pre-fetching of PDF file
 *   data. When range requests are enabled PDF.js will automatically keep
 *   fetching more data even if it isn't needed to display the current page.
 *   The default value is `false`.
 *
 *   NOTE: It is also necessary to disable streaming, see above, in order for
 *   disabling of pre-fetching to work correctly.
 * @property {boolean} [pdfBug] - Enables special hooks for debugging PDF.js
 *   (see `web/debugger.js`). The default value is `false`.
 */
/**
 * This is the main entry point for loading a PDF and interacting with it.
 *
 * NOTE: If a URL is used to fetch the PDF data a standard Fetch API call (or
 * XHR as fallback) is used, which means it must follow same origin rules,
 * e.g. no cross-domain requests without CORS.
 *
 * @param {string|URL|TypedArray|PDFDataRangeTransport|DocumentInitParameters}
 *   src - Can be a URL where a PDF file is located, a typed array (Uint8Array)
 *         already populated with data, or a parameter object.
 * @returns {PDFDocumentLoadingTask}
 */
function getDocument(src) {