commented out TouchablePreview - breaking tests

lib/src/Navigation.ts

 import { ComponentEventsObserver } from './events/ComponentEventsObserver';
 import { LayoutRoot, Layout } from './interfaces/Layout';
 import { Options } from './interfaces/Options';
-import { TouchablePreview, Props as TouchablePreviewProps } from './adapters/TouchablePreview';
+// import { TouchablePreview, Props as TouchablePreviewProps } from './adapters/TouchablePreview';
 
 export class Navigation {
   public readonly Element: React.ComponentType<{ elementId: any; resizeMode?: any; }>;
-  public readonly TouchablePreview: React.ComponentType<TouchablePreviewProps>;
+  // public readonly TouchablePreview: React.ComponentType<TouchablePreviewProps>;
   public readonly store: Store;
   private readonly nativeEventsReceiver: NativeEventsReceiver;
   private readonly uniqueIdProvider: UniqueIdProvider;
 
   constructor() {
     this.Element = Element;
-    this.TouchablePreview = TouchablePreview;
+    // this.TouchablePreview = TouchablePreview;
     this.store = new Store();
     this.nativeEventsReceiver = new NativeEventsReceiver();
     this.uniqueIdProvider = new UniqueIdProvider();