Icon scaling broken with KDE Frameworks 6.23 [Upstream]

*This is an upstream issue in KDE Frameworks, but I'm reporting this here because other users coming across the issue might think it's a Chicago95 issue instead of KDE.*

Upstream Report with more details: https://bugs.kde.org/show_bug.cgi?id=517534

As of Frameworks 6.23, KDE will now use an SVG icon if it exists, even if there's an appropriate-size PNG icon (previously, it was doing the opposite, but that was far less noticeable in practice). Instead of using a 16/22/32px icon, it'll use the "scalable" (which are usually 48px) icon scaled down to 16/22/32px. Because Chicago95 is 'pixel art', the result looks blurred and messy.

A temporary workaround is to comment out all of the "scalable" folders from `index.theme` (functionally just removing them). Not ideal, but it turns out they weren't being used properly anyway.

I noticed this with my own [spinoff](https://codeberg.org/irasponsible/canberra95), but it happens with Chicago95 icons as well.