kdePackages.ktextaddons: backport fix for Qt 6.9

pkgs/kde/misc/ktextaddons/default.nix

···
   lib,
   mkKdeDerivation,
   fetchurl,
+  fetchpatch,
   qtspeech,
   qttools,
   kxmlgui,
···
     url = "mirror://kde/stable/ktextaddons/ktextaddons-${version}.tar.xz";
     hash = "sha256-ZLgGAuhLJekWRiCvP2NB+oZbhegmq49eAgYa4koneyA=";
   };
+
+  # Backport fix for Qt 6.9
+  # FIXME: remove in next update
+  patches = [
+    (fetchpatch {
+      url = "https://invent.kde.org/libraries/ktextaddons/-/commit/fdbb082aaa0125d60fdf819c9cb95c40bdb98800.patch";
+      hash = "sha256-S+yGXXhZ/OdIgMGgyzofr1BzNV44/Uz/6NAoxdN9wRk=";
+    })
+  ];
 
   extraBuildInputs = [
     qtspeech