refactor(core): minimize comment editor (#12995)

#### PR Dependency Tree


* **PR #12995** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Introduced a new clipboard module, making clipboard-related
functionality available for external use.
* Added a comprehensive extension system for the comment editor,
supporting rich text features, widgets, and configurable options.

* **Bug Fixes**
* Improved stability by ensuring comment highlighting features and
toolbar event subscriptions handle missing dependencies gracefully,
preventing potential runtime errors.

* **Refactor**
* Simplified comment editor view manager setup for easier configuration
and maintenance.

* **Chores**
* Updated package exports to expose new clipboard modules and
configurations.
* Removed confirm modal and portal-related logic from the comment editor
component.
* Adjusted temporary store creation to omit adding an extra surface
block under the root page.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

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

@@ -392,9 +392,11 @@ export class CodeBlockComponent extends CaptionedBlockComponent<CodeBlockModel>
   }
 
   get isCommentHighlighted() {
-    return this.std
-      .get(BlockCommentManager)
-      .isBlockCommentHighlighted(this.model);
+    return (
+      this.std
+        .getOptional(BlockCommentManager)
+        ?.isBlockCommentHighlighted(this.model) ?? false
+    );
   }
 
   override async getUpdateComplete() {