Start Websocket worker when notification is approved on minimal

### Description

Based on this comment https://github.com/home-assistant/android/pull/6440#discussion_r2943114676 we could automatically start the worker when in minimal flavor so we can directly receive notification right away without waiting for the activity to start the worker.

### Additional context

We don't want the context within the PermissionManager so we could inject the WorkerManager and make an extension to start the WebSocketManager.