fix: include scene to preload assets in babylonjs-editor-tools

Author: Julien Moreau-Mathis

tools/src/loading/script.ts

@@ -19,7 +19,7 @@ export const scriptAssetsCache = new Map<string, any>();
  * @internal
  */
 export async function _preloadScriptsAssets(scene: Scene, rootUrl: string) {
-	const nodes = [...scene.transformNodes, ...scene.meshes, ...scene.lights, ...scene.cameras];
+	const nodes = [scene, ...scene.transformNodes, ...scene.meshes, ...scene.lights, ...scene.cameras];
 
 	const scripts = nodes
 		.filter((node) => node.metadata?.scripts?.length)