AddonManager: Dropdown checkboxes huge and not aligned

[maxwxyz]

Not sure if fixable with a theme but the dropdown menu in the addon manager has huge checkmarks and boxes and they are not vertically centered / alignes which becomes visible when hovering the entries:

[obelisk79]

Just for clarity this is an issue on my system even when No Stylesheet is applied. Perhaps something with the way Chris constructed this when we revamped the addon manager. Same with the stop icon regression. I'll see if I can address it directly in OpenTheme. Although perhaps @kadet1090 would be willing to look into addon manager source being the code ninja that he is so these will just respect the stylesheet as-is.
I found the python where it is created: src/Mod/AddonManager/Widgets/addonmanager_widget_filter_selector.py

I might be able to style the check box by targeting the class via the stylesheet, but this would be a (hopefully temporary) hack.

[MisterMakerNL]

Try this style:
FreeCAD/FreeCAD#13772 (comment)
I bet it's:
QComboBox::indicator {
padding-left: 8px;
background-color: transparent;
}

QComboBox::indicator:checked {
width: 10px;
height: 10px;
image: url(qss:images_classic/Check-Checked-white.png);
}