Image diff is displayed incorrectly for webp files.

[AtaTrkgl]

The problem

When viewing the difference for .webp files, only the 2-up view is working correctly (not sure about the difference view). In both Swipe and Onion Skin views, the new version is displayed as old + new. The images below explain the issue more clearly.

Here is the 2-up view

Here is the Swipe view

Here is the Onion Skin view

Release version

3.3.14

Operating system

Windows 11

Steps to reproduce the behavior

1. Create a repo
2. Add a .webp image
3. commit your changes
4. Change the old .webp image
5. View the diff from GitHub Desktop

Log files

No response

Screenshots

No response

Additional context

Here is the commit I took the screenshots from: espale-studios/website@748296a