Desktop/kde: add patches

roles/kde/patches/plasma-workspace/pr5746.patch

@@ -0,0 +1,33 @@
+From f6ec2847358178a5b6ff0497e52d1e2be43d2a48 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Luan=20Vitor=20Simi=C3=A3o=20oliveira?=
+ <luanv.oliveira@outlook.com>
+Date: Fri, 8 Aug 2025 14:41:49 -0300
+Subject: [PATCH] kcms/style: add special case for Adwaita gtk theme
+
+Allows the user to set the GTK theme to the default "Adwaita"
+needs to be special cased because the theme is implemented in code.
+---
+ kcms/style/gtkthemesmodel.cpp | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/kcms/style/gtkthemesmodel.cpp b/kcms/style/gtkthemesmodel.cpp
+index 002e87dbd0d..6dcdf4f1a1d 100644
+--- a/kcms/style/gtkthemesmodel.cpp
++++ b/kcms/style/gtkthemesmodel.cpp
+@@ -35,7 +35,12 @@ void GtkThemesModel::load()
+             if (possibleThemeDirectory.dirName() == u"Breeze-Dark") {
+                 continue;
+             }
+-
++            if (possibleThemeDirectory.dirName() == u"Default") {
++                // Adwaita is a special case, since it is implemented inside GTK itself
++                // also setting gtk-theme-name to "Default" breaks dark theme
++                gtk3ThemesNames.insert(QStringLiteral("Adwaita"), possibleThemeDirectory.path());
++                continue;
++            }
+             gtk3ThemesNames.insert(possibleThemeDirectory.dirName(), possibleThemeDirectory.path());
+         }
+     }
+-- 
+GitLab
+