feat(editor): block comment extension (#12980)

#### PR Dependency Tree


* **PR #12980** 👈

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blocksuite/affine/blocks/bookmark/src/bookmark-block.ts

@@ -8,6 +8,7 @@ import type {
 } from '@blocksuite/affine-model';
 import { ImageProxyService } from '@blocksuite/affine-shared/adapters';
 import {
+  BlockCommentManager,
   CitationProvider,
   DocModeProvider,
   LinkPreviewServiceIdentifier,
@@ -128,6 +129,12 @@ export class BookmarkBlockComponent extends CaptionedBlockComponent<BookmarkBloc
     return this.std.get(ImageProxyService);
   }
 
+  get isCommentHighlighted() {
+    return this.std
+      .get(BlockCommentManager)
+      .isBlockCommentHighlighted(this.model);
+  }
+
   handleClick = (event: MouseEvent) => {
     event.stopPropagation();