fix: move ChangeScenario outside of loop, remove the discard modifier

src/PepperDash.Essentials.Core/Room/Combining/EssentialsRoomCombiner.cs

@@ -445,8 +445,10 @@ namespace PepperDash.Essentials.Core
                     else
                     {
                         Debug.LogMessage(LogEventLevel.Debug, this, "Unable to find partition with key: '{0}'", partitionState.PartitionKey);
-                    }
+                    }                  
                 }
+                // Activates the scenario to prevent _currentScenario from being null when starting in manual mode.
+                ChangeScenario(scenario);
             }
             else
             {

src/PepperDash.Essentials.Core/Room/Interfaces.cs

@@ -28,7 +28,7 @@ namespace PepperDash.Essentials.Core
     [Obsolete("Will be removed in a future version")]
     public interface IHasMultipleDisplays
     {
-        Dictionary<string, IRoutingSink> Displays { get; }
+        Dictionary<eSourceListItemDestinationTypes, IRoutingSink> Displays { get; }
     }
 
     /// <summary>