Fix material settings not being applied after reloading the chunks of a scene. (#1853)

Author: leMaik

chunky/src/java/se/llbit/chunky/renderer/scene/Scene.java

@@ -1433,6 +1433,8 @@ public synchronized void loadChunks(TaskTracker taskTracker, World world, Map<Re
     }
     Log.info(String.format("Loaded %d chunks", numChunks));
 
+    importMaterials();
+
     isLoading = false;
   }