feat(editor): add feature flag for code block html preview (#12397)

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

- **New Features**
  - Introduced an experimental "Code block HTML preview" feature, allowing users to preview HTML within code blocks when enabled.
- **Settings**
  - Added a toggle in experimental features to enable or disable the code block HTML preview.
- **Localization**
  - Added English translations for the new code block HTML preview feature and its description in workspace settings.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/core/src/desktop/dialogs/setting/general-setting/editor/edgeless/snapshot.tsx

@@ -61,7 +61,8 @@ export const EdgelessSnapshot = (props: Props) => {
       .foundation(framework)
       .theme(framework)
       .database(framework)
-      .linkedDoc(framework).value;
+      .linkedDoc(framework)
+      .codeBlockHtmlPreview(framework).value;
     return manager
       .get('preview-edgeless')
       .concat([ViewportElementExtension('.ref-viewport')]);