refactor(editor): reorg block specs (#9421)

blocksuite/playground/apps/starter/main.ts

@@ -13,7 +13,6 @@ import {
   FontConfigExtension,
   ParseDocUrlProvider,
   QuickSearchProvider,
-  RefNodeSlotsExtension,
   RefNodeSlotsProvider,
 } from '@blocksuite/blocks';
 import { effects as blocksEffects } from '@blocksuite/blocks/effects';
@@ -60,12 +59,10 @@ async function main() {
         },
         defaultExtensions: (): ExtensionType[] => [
           FontConfigExtension(CommunityCanvasTextFonts),
-          RefNodeSlotsExtension(),
         ],
         extensions: {
           FontConfigExtension: FontConfigExtension(CommunityCanvasTextFonts),
           WidgetViewMapExtension,
-          RefNodeSlotsExtension: RefNodeSlotsExtension(),
         },
         mockServices: {
           mockDocModeService,

blocksuite/playground/apps/starter/utils/editor.ts

@@ -13,7 +13,6 @@ import {
   OverrideThemeExtension,
   type PageRootService,
   ParseDocUrlExtension,
-  RefNodeSlotsExtension,
   RefNodeSlotsProvider,
   SpecProvider,
   toolbarDefaultConfig,
@@ -73,9 +72,7 @@ export async function mountDefaultDocEditor(collection: DocCollection) {
     }
   }
 
-  const refNodeSlotsExtension = RefNodeSlotsExtension();
   const extensions: ExtensionType[] = [
-    refNodeSlotsExtension,
     PatchPageServiceWatcher,
     FontConfigExtension(CommunityCanvasTextFonts),
     ParseDocUrlExtension(mockParseDocUrlService(collection)),