Refactor: Move Realm queries from DashboardActivity to TeamRepository

Moved the direct Realm database queries in `handleTaskNavigation` and `handleJoinRequestNavigation` from `DashboardActivity` to new methods in `TeamRepository`.

This change improves the architecture by centralizing data access in the repository layer and removing data-layer logic from the UI.

Author: google-labs-jules[bot]

app/src/main/java/org/ole/planet/myplanet/repository/RealmRepository.kt

@@ -14,7 +14,7 @@ import org.ole.planet.myplanet.datamanager.applyEqualTo
 import org.ole.planet.myplanet.datamanager.findCopyByField
 import org.ole.planet.myplanet.datamanager.queryList
 
-open class RealmRepository(private val databaseService: DatabaseService) {
+open class RealmRepository(protected val databaseService: DatabaseService) {
     protected suspend fun <T : RealmObject> queryList(
         clazz: Class<T>,
         builder: RealmQuery<T>.() -> Unit = {},