fix: No contrast in folder icons on Dolphin

### What happened?

Glyphs in folders are an extremely light color and impossible to see on Mocha-Rosewater using Dolphin

### Steps to Reproduce

1. Install Mocha-Rosewater
2. Set the style of icon of a folder in Dolphin to one with a glyph

### Plasma Version

Plasma 6.1

### Linux Distribution

Arch Linux

### Theme Flavour

Mocha

### Theme Accent

Rosewater

### Window Decoration Style

None

### Logs / Screenshots

_No response_