breeze-icons: don't propagate qtsvg build input

breeze-icons does not have a separate dev output, so this pulls
qtsvg.dev into the closure.

pkgs/development/libraries/kde-frameworks/breeze-icons.nix

@@ -5,6 +5,6 @@ kdeFramework {
   meta = { maintainers = [ lib.maintainers.ttuegel ]; };
   outputs = [ "out" ];
   nativeBuildInputs = [ ecm ];
-  propagatedBuildInputs = [ qtsvg ];
+  buildInputs = [ qtsvg ];
   propagatedUserEnvPkgs = [ qtsvg.out ];
 }