Wrong aspect ratio of portrait images in link previews in Firefox

Description:

The aspect ratio of portrait images in link previews in Firefox is wrong.

Steps to reproduce:

1. Compose a message containg a link to an image in portrait orientation, e.g. https://oekastatic.orf.at/static/images/site/oeka/20111145/tu2.5018694.jpg

Expected behavior:

The aspect ratio of the image in the link preview is correct.

Actual behavior:

The aspect ratio of the image in the link preview is incorrect.

Server Setup Information:

• Version of Rocket.Chat Server: 6.4.4
• Deployment Method: Docker
• Number of Running Instances: 1
• MongoDB Version: 6.0.11

Client Setup Information

• Browser Version: Firefox 119.0 (64-bit)
• Operating System: Arch Linux

Additional context

There are open issues regarding aspect ratios of attached images (#23649, #20546) which might be related. However, I did not find anything about the aspect ratio of images in link previews.

When using chromium, the aspect ratio is correct:

Reproduce the issue in Firefox 119 or later with the portrait image URL from the report, then compare the link preview with Chromium. Trace the frontend link-preview image rendering and verify that the displayed aspect ratio matches the source image in Firefox without regressing Chromium behavior.