Fix camera not being centered above the selected chunks when creating a new scene. (#1858)

Author: leMaik

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

@@ -245,6 +245,7 @@ public void saveScene(SceneIOProvider ioContext, Scene scene) throws Interrupted
       scene.setYClipMax(yClipMax);
       context.setSceneDirectory(new File(context.getChunky().options.sceneDir, scene.name));
       scene.loadChunks(taskTracker, world, chunksToLoadByRegion);
+      scene.moveCameraToCenter();
       scene.refresh();
       scene.setResetReason(ResetReason.SCENE_LOADED);
       scene.setRenderMode(RenderMode.PREVIEW);