## Summary
- Partially reverts commit c84218d6 to restore group node functionality
in context menus
- Adds "(Deprecated)" label to indicate the feature is deprecated
- Fixes TypeError when right-clicking on group nodes
- Re-enables tests that were disabled when the feature was removed
## Changes
1. **Restored context menu options** - Added back "Convert to Group Node
(Deprecated)" and "Manage Group Nodes" menu items
2. **Fixed null reference error** - Added null-safe operator to prevent
errors when right-clicking group nodes
3. **Re-enabled tests** - Restored 7 tests that were disabled in commit
586f8824
## Test plan
- [x] Right-click on canvas → verify "Convert to Group Node
(Deprecated)" appears
- [x] Right-click on nodes → verify the same menu option appears
- [x] Select multiple nodes and use the menu option → verify conversion
works
- [x] Right-click on group nodes → verify no errors occur
- [x] Run browser tests → verify all re-enabled tests pass
┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-4967-feat-Restore-group-node-conversion-menu-with-deprecated-label-24e6d73d36508149a6f2dbef47223e94)
by [Unito](https://www.unito.io)
---------
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: github-actions <github-actions@github.com>
