icons in filelight on windows

[Harald Sitter]

Servas!

Icons in filelight on windows are partially broken and I am not quite
sure why. What appears to happen is that the breeze icons are inside
the qresource system but don't get used by kirigami components because
they want to look in breeze-internal (which isn't actually resolving
through kiconthemes and as far as I can tell not in :/icons/* which is
probably why it fails to resolve). So then kiconthemes goes "yo, this
be missing, let's try fallback" except the fallback apparently is
hicolor and doesn't exist because we are on windows but it exists in
the qrc why that doesn't work is anyone's guess though.

[7244] kf.iconthemes: Icon theme "breeze-internal" not found.
[7244] kf.iconthemes: Couldn't find current icon theme, falling back to default.
[7244] kf.iconthemes: Standard icon theme "hicolor" not found!

As ever I also don't know why filelight was ported to qt6 without
review by anyone. It's been a broken mess ever since, preventing me
from making a new release to the windows store.

Everything is sad and I don't know what to do about it. Please help! :((