Describe the feature or problem you’d like to solve

One of the reasons that I really enjoy using gh is because of how easy it is to manage and switch between different PRs. And using gh pr merge -d is very nice because it will delete your branch locally and switch you back to the default branch. This doesn't seem to work with a worktree setup.

I'd just like to request that gh pr merge -d can support deleting my local worktree for the branch that I made the PR in.