Set isEditor for LoadingScreenPlugin and FrameFadePlugin in editor example

examples/tweakpane-editor/script.ts

     viewer.getPlugin(MaterialConfiguratorPlugin)!.enableEditContextMenus = true
     viewer.getPlugin(SwitchNodePlugin)!.enableEditContextMenus = true
 
+    // disable fading on update
+    viewer.getPlugin(LoadingScreenPlugin)!.isEditor = true
+    // disable fading on update
+    viewer.getPlugin(FrameFadePlugin)!.isEditor = true
+
     const rt = viewer.getOrAddPluginSync(RenderTargetPreviewPlugin)
     rt.addTarget({texture: viewer.getPlugin(GBufferPlugin)?.normalDepthTexture}, 'normalDepth')
     rt.addTarget({texture: viewer.getPlugin(GBufferPlugin)?.flagsTexture}, 'gBufferFlags')

plugins/configurator/src/SwitchNodePlugin.ts

  * This works by toggling the `visible` property of the children of a parent object.
  * The plugin interfaces with the picking plugin and also provides uiConfig to show and edit the variations.
  * It also provides a function to create snapshot previews of individual variations. This creates a limited render of the object with the selected child visible.
- * To get a proper render, its better to render it offline and set the image as a preview.
+ * To get a proper render, it's better to render it offline and set the image as a preview.
  * This functionality is inherited from `SwitchNodeBasePlugin`.
  *
- * Additionally this plugin adds a Grid UI using {@link GridItemListPlugin} in the DOM over the viewer canvas to show various object variations and allow the user to select them.
+ * Additionally, this plugin adds a Grid UI using {@link GridItemListPlugin} in the DOM over the viewer canvas to show various object variations and allow the user to select them.
  * The UI can also be used in the editor to edit the variations and apply them.
  */
 export class SwitchNodePlugin extends SwitchNodeBasePlugin {