fix(core): adjust some uis for sharing (#12486)

fix AF-2660

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

## Summary by CodeRabbit

- **Style**
  - Improved visual appearance of sidebar buttons and quick search input, including reduced sizes, updated padding, and enhanced hover effects.
  - Adjusted layout spacing for quick search and new page elements in the sidebar.
  - Updated share button styling to use the primary variant.

- **New Features**
  - Notification cards now only display messages and action footers when relevant, providing a cleaner interface.

- **Refactor**
  - Removed shortcut hint and spotlight elements from the quick search input for a simplified user experience.

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

packages/frontend/core/src/components/root-app-sidebar/index.css.ts

@@ -11,6 +11,7 @@ export const quickSearchAndNewPage = style({
   alignItems: 'center',
   gap: 8,
   padding: '8px 0',
+  marginLeft: -8,
 });
 export const quickSearch = style({
   width: 0,