fix(core): empty style for comment (#13142)

fix AF-2735

#### PR Dependency Tree


* **PR #13142** 👈

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

* **Style**
* Increased padding for empty state elements in the comment sidebar to
improve visual spacing.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/core/src/components/comment/sidebar/style.css.ts

@@ -39,6 +39,7 @@ export const commentList = style({
 export const empty = style({
   height: '100%',
   flex: 1,
+  padding: 32,
   display: 'flex',
   alignItems: 'center',
   justifyContent: 'center',