I'm not familiar enough with HTML and CSS to know what exactly is happening, but I'm guessing that for whatever reason the attributes/class tied to images within tables is different than when they're by themselves and it's causing the Doxygen Awesome theming to incorrectly pickup the images as elements to change when dark mode is enabled.

Inverted Images:

The images are correctly displayed when the toggle is switched to light mode (see attachment).

Doxygen Version: Release v1.9.3
Doxygen Awsome Version: a5efba0

The following is an MRE for this issue:
(deleted link to zip file)

(Ignore the strings of the first column in the tables, they're leftovers from the project I reduced into the example)