SVG isn't rendered on macOS

After upgrading to 0.2.14, the SVG button images aren't rendered on my macOS machine. I have `gtk4` and `librsvg` installed using `brew`. When reverting to 0.2.13, Space Acres crashes in `pango` font selection, so this might be a corrupt font cache (or something similar). <img width="868" height="668" alt="Image" src="https://github.com/user-attachments/assets/e79bbe57-fdee-4ed2-8ad0-c847b52bfaf6" />