QGIS crashes when the Style is set to Macintosh

[benpearman]

Describe the bug
QGIS crashes when the Style is set to Macintosh

To Reproduce
Steps to reproduce the behavior:

1. Uninstall the Koordinates & Kart Plugins, set the style as Macintosh (QGIS > Preferences > General > Style > Macintosh)
2. Restart QGIS
3. Reinstall the Koordinates plugin
4. A dialog pops up asking you to install the Kart plugin. Install it and QGIS crashes (Standard macOS styled "QGIS quit unexpectedly" window comes up)
5. Relaunch QGIS and go into plugins. Koordinates isn't enabled but Kart is. Tick the box and QGIS immediately crashes with the same error message
6. Relaunch QGIS and set the style back to "Fusion" instead of "Macintosh". Restart QGIS
7. Reenable the Koordinates plugin and QGIS does not crash.

Expected behavior
QGIS to not crash when I have the style set as macintosh

Screenshots
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Version info (this is important!):

• macOS 12.5.1
• QGIS 3.24.3-Tisler, Kart Plugin 1.0.9 & Koordinates Plugin 1.0.3

Kart Plugin version
1.0.9
QGIS version
3.24.3-Tisler
Operating system
macOS 12.5.1 x86_64 i386 64bit
Kart version
Kart v0.11.3, Copyright (c) Kart Contributors
» GDAL v3.4.0; PROJ v6.3.0
» PyGit2 v1.9.0; Libgit2 v1.4.2; Git v2.33.GIT
» SQLAlchemy v1.4.36; pysqlite3 v2.6.0/v3.31.1; SpatiaLite v5.0.1; Libpq v14.0.3
» SpatialIndex v1.9.3

Additional context
Add any other context about the problem here.