Archive icons missing on Wikipedia pages in Safari

[cgorringe]

Describe the bug
Using the latest Manifest v3 modified version for Safari (with webRequest removed), I turned on Wikipedia Resources in Settings and viewed a page on Wikipedia. The Archive icons used to display under the Sources section, but now they no longer do, but instead are replaced with a placeholder icon. It appears that the icons are no longer readable by the extension.

To Reproduce
Steps to reproduce the behavior:

1. Turn on "Wikipedia Resources" in Settings.
2. Go to https://en.wikipedia.org/wiki/Vincent_van_Gogh
3. Scroll down to the Sources section.
4. See missing icons.

Expected behavior
The archive icons should be displayed.

Screenshots

Environment (please complete the following information):

• Webextension version: v3.4.2 (modified)
• Browser + version: Safari 18.0
• OS + version: macOS Sonoma 14.7

[cgorringe]

Testing this on branch safari-manifest-v3