refactor(scene): extract scenes initialization into a separate method

SceneMgr.js

@@ -16,9 +16,16 @@ const tm = new TimerMgr();
 class SceneMgr {
 
     constructor() {
+        // Log the initialization message for Scene Manager.
         log.info('Initialization of SceneMgr');
 
-        this.scenes = this.getScenes().reduce((scenes, scene) => {
+        // Initialize the scenes map by reducing the array of scenes into an object with unique IDs as keys.
+        this.scenes = this.initializeScenes();
+    }
+
+    // Helper method to initialize scenes using reduce.
+    initializeScenes() {
+        return this.getScenes().reduce((scenes, scene) => {
             const sceneUID = scene.getUID();
             scenes[sceneUID] = new Scene(scene);
             return scenes;