fix(editor): add comment entire to inner toolbar (#13304)

Close
[BS-3624](https://linear.app/affine-design/issue/BS-3624/page模式单选图片的时候希望有comment-按钮)




#### PR Dependency Tree


* **PR #13304** 👈

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**
* Added a comment button to the image and surface reference block
toolbars for easier commenting.

* **Refactor**
* Simplified array flattening operations across multiple components and
utilities by replacing `.map(...).flat()` with `.flatMap(...)`,
improving code readability and maintainability.

* **Bug Fixes**
* Improved comment creation logic to allow adding comments even when
selections exist.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/templates/build-stickers.mjs

@@ -51,8 +51,7 @@ import stickerContent${id} from './stickers/${category}/Content/${sticker}';`,
 }
 
 const importStatements = Object.values(data)
-  .map(v => Object.values(v).map(v => v.importStatement))
-  .flat()
+  .flatMap(v => Object.values(v).map(v => v.importStatement))
   .join('\n');
 
 const templates = `const templates = {