x11-themes/plasma5-kde-gtk-config: add upstream patch to remove debug output

Remove debug message to avoid polute to stdout.
This would break application like zenity which output to stdout.

PR: 253123
Reported by: Alexander Vereeken <Alexander88207@protonmail.com>
Obtained from: https://invent.kde.org/plasma/kde-gtk-config/-/commit/62e272df848d6848482ceb534d14bf36c9fde241