Emoji picker category text is black when using dark theme

[foresto]

Describe the bug

When using the Dark theme, or the System theme with a KDE Plasma dark theme (I'm using Breeze Dark on Plasma 5), the category text in Nheko's emoji picker is black on a dark background, making it difficult to read.

To Reproduce

1. Select a dark theme, either directly or by using Nheko's System theme with a dark desktop color scheme.
2. Click on an emoji button to enter the emoji picker.
3. Scroll through the emoji categories.
4. Notice the black text on dark background.

What happened?

No response

Expected behavior

No response

Screenshots

Version

0.12.0-24c687d5

Operating system

Linux

Installation method

Local build

Qt version

5.15.8

C++ compiler

flatpak-builder's default compiler

Desktop Environment

KDE Plasma, Breeze Dark theme

Did you use profiles?

• Profiles used?

Relevant log output

Backtrace