pokefinder: move icon to spec-compliant location

pkgs/by-name/po/pokefinder/package.nix

@@ -7,7 +7,7 @@
   cmake,
   python3,
   qt6,
-  imagemagick,
+  iconConvTools,
   gitUpdater,
 }:
 
@@ -40,8 +40,7 @@ stdenv.mkDerivation (finalAttrs: {
   ''
   + lib.optionalString (!stdenv.hostPlatform.isDarwin) ''
     install -D Source/PokeFinder $out/bin/PokeFinder
-    mkdir -p $out/share/pixmaps
-    convert "$src/Source/Form/Images/pokefinder.ico[-1]" $out/share/pixmaps/pokefinder.png
+    icoFileToHiColorTheme $src/Source/Form/Images/pokefinder.ico pokefinder $out
   ''
   + ''
     runHook postInstall
@@ -54,7 +53,7 @@ stdenv.mkDerivation (finalAttrs: {
   ]
   ++ lib.optionals (!stdenv.hostPlatform.isDarwin) [
     copyDesktopItems
-    imagemagick
+    iconConvTools
   ];
 
   desktopItems = [