applet-window-buttons: backport build fixes for Plasma 5.27

pkgs/development/libraries/applet-window-buttons/default.nix

···
 { lib
 , mkDerivation
 , fetchFromGitHub
+, fetchpatch
 , cmake
 , extra-cmake-modules
 , kcoreaddons
···
     rev = version;
     hash = "sha256-Qww/22bEmjuq+R3o0UDcS6U+34qjaeSEy+g681/hcfE=";
   };
+
+  patches = [
+    # FIXME: cherry-pick Plasma 5.27 build fix, remove for next release
+    (fetchpatch {
+      url = "https://github.com/psifidotos/applet-window-buttons/commit/924994e10402921bf22fefc099bca2914989081c.diff";
+      hash = "sha256-4ErqmkIbkvKwns50LhI8Et1EMyvrXYcNRL1rXCxau2w=";
+    })
+  ];
 
   nativeBuildInputs = [
     cmake