Created attachment 167987 [details]
Dialog with unreadable breadcrumb bar

SUMMARY
The non-native QML fallbacks for FileDialog and FolderDialog are customized by qqc2-desktop-style, but their breadcrumb bars don't seem to be. When Plasma is configured to use the Breeze Dark color scheme, this makes the folder names in the breadcrumb bar unreadable, since they're rendered in the same color as the background (both white).

```
import QtQuick
import QtQuick.Controls
import QtQuick.Dialogs

Item {
    width: 800
    height: 600

    Button {
        text: "Open dialog"
        onClicked: theDialog.open()
    }

    FolderDialog {
        id: theDialog
        options: FolderDialog.DontUseNativeDialog
    }
}
```

STEPS TO REPRODUCE
1. Copy-paste the above QML source to a file
2. Set up Breeze Dark color theme
3. Run `qml6 file.qml`

OBSERVED RESULT
The individual folder names in the breadcrumb bar are unreadable

EXPECTED RESULT
The folder names should either be rendered as black-on-white or as white-on-black text.

SOFTWARE/OS VERSIONS
Linux 
KDE Plasma Version: 6.0.3
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.3

ADDITIONAL INFORMATION
qqc2-breeze-style also appears to be affected by this.