Wrong background color for preview

[dabuside]

Describe the bug
A back background color for a text file preview that is hard to recognize the text

To Reproduce
Steps to reproduce the behavior:

1. Preview an image image with alpha channel
2. Navigate to a text file
3. See a black background color for text preview. (as well as unspported file preview and many others)

Expected behavior
A clear and concise description of what you expected to happen.

normal color for background color

Desktop (please complete the following information):

• OS Version: win 11 pro 23H2
• QuickLook Version: v3.7.3 from MS store

Screenshots and Exception Log
If applicable, add screenshots and logs to help explain your problem. The log file is located in one of several locations.

[rabelux]

Duplicate of #611

[MattVoda]

Troublesome with vector artwork. Black strokes on a dark QL background are tough to see.

[emako]

@MattVoda The switching theme function of SVG is under development #1797 #1805