I can't switch session from worktrees to local

### Short summary

I lost the option to switch from worktrees to local

### Affected version or release

1.1.9

### Installation context

_No response_

### What happened?

In latest Windows version 1.1.9, it removed the option for us to switch between local VS worktree. I want it back!
The worktree doesn't work for our projects as our repo has a lot of submodules. It's not convenient to checkcout a worktree. There's no way to build and test in a worktree. It's broken. Please bring the settings back.

### Steps to reproduce
**Before**:

**After**:

### Expected behavior
I can let Copilot just update my code in current branch, so I can build and test there.

### Additional context

_No response_

Riproduci il problema su Windows con la versione 1.1.9 e confronta gli screenshot Before e After. Traccia le impostazioni che consentono di scegliere tra worktrees e il branch locale corrente, quindi verifica che l’opzione di commutazione sia disponibile e che Copilot possa aggiornare il branch corrente per i progetti che usano sottomoduli.

Scritto dal modello di indicizzazione a partire dal testo della issue.