Allow creating Worktrees from branch context menu

Testing #285964

`ai-editor` was created while creating a new worktree. But I can't create a worktree from the branch menu:

<img width="329" height="266" alt="Image" src="https://github.com/user-attachments/assets/ac83f44c-62c5-49b9-aef1-272fbfb1fdc2" />