This function shows all the hidden actors from the selected level actors and sets their "is editor only actor" value to "true". Keep in mind that you have to enable the "Editor Scripting Utilities" plugin to be able to use the "Get Selected Level Actors" node.
The idea to make this function has been made by the fact that the "Visible" parameter of the actors only hides the object but every calculation still goes on and the "Actor Hidden In Game" parameter of the actors hides the actor but the collider and the impact on resources remain in the scene runtime.
