[Nightly] Update v0.8.5502a — Grey Hack Steam update #17099

Changelog - The UI design has been updated to have a more consistent look. Thanks for the design, serdartpkl! There are still some programs that have not yet been migrated to the new design or have been partially migrated. In upcoming updates, the new design will be fully applied along with several adjustments based on feedback. - The default color theme has been changed. If you were already using the default color theme, you need to select another color theme and then reselect the default theme for the new changes to apply from Settings > Appearance. - The default desktop background has been changed and the old default wallpaper has been added as an additional option in Settings > Appearance. - Fixed regression bug in Settings > Appearance that prevented loading a color theme from an XML file. Update v0.8.5465a - Fixed bug that allowed creating a symlink within the same file it points t...