Refactor: Optimize AdapterTask to use UserRepository

- Injected `UserRepository` into `AdapterTask` to handle user data fetching.
- Removed direct `Realm` instance calls from `showAssignee` to prevent per-item database queries.
- Updated `TeamTaskFragment` to use the inherited `userRepository` and pass it to the adapter.
- Fixed a compilation error caused by a duplicate `UserRepository` injection.

This change improves RecyclerView performance by centralizing data access and reducing synchronous I/O on the main thread.

Author: google-labs-jules[bot]

app/src/main/java/org/ole/planet/myplanet/ui/team/teamTask/TeamTaskFragment.kt

@@ -48,8 +48,6 @@ import org.ole.planet.myplanet.utilities.Utilities
 
 @AndroidEntryPoint
 class TeamTaskFragment : BaseTeamFragment(), OnCompletedListener {
-    @Inject
-    lateinit var userRepository: UserRepository
     private var _binding: FragmentTeamTaskBinding? = null
     private val binding get() = _binding!!
     private var deadline: Calendar? = null