Hide the view until the scene is initially built (#2894)

* Hide the view until the scene is initially built

* fmt

* Remove log

src/lib/singletons.ts

@@ -11,6 +11,8 @@ export const engineCommandManager = new EngineCommandManager()
 
 // This needs to be after codeManager is created.
 export const kclManager = new KclManager(engineCommandManager)
+kclManager.isFirstRender = true
+
 engineCommandManager.getAstCb = () => kclManager.ast
 
 export const sceneInfra = new SceneInfra(engineCommandManager)