message: Update SceneNavigation for v9
  Closes
diff: @@ -91,7 +91,10 @@ declare global {
  */
  protected _onToggleNav(event: JQuery.ClickEvent): void;
  - static _onLoadProgress(context: string, pct: number): void;
  + /**
  + * Display progress of some major operation like loading Scene textures.
  + */
  + static displayProgressBar(options: SceneNavigation.DisplayProgressBarOptions): void;
  }
  namespace SceneNavigation {
  @@ -104,5 +107,17 @@ declare global {
  css: string;
  })[];
  }
  +
  + interface DisplayProgressBarOptions {
  + /**
  + * A text label to display
  + */
  + label?: string | undefined;
  +
  + /**
  + * A percentage of progress between 0 and 100
  + */
  + pct: number;
  + }
  }
  }
  